From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mika Kuoppala Subject: [PATCH 3/4] drm/i915/icl: Disable master intr before reading Date: Tue, 2 Oct 2018 17:05:51 +0300 Message-ID: <20181002140552.1051-3-mika.kuoppala@linux.intel.com> References: <20181002140552.1051-1-mika.kuoppala@linux.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by gabe.freedesktop.org (Postfix) with ESMTPS id 178806E315 for ; Tue, 2 Oct 2018 14:06:22 +0000 (UTC) In-Reply-To: <20181002140552.1051-1-mika.kuoppala@linux.intel.com> 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 RGlzYWJsZSBtYXN0ZXIgaW50ZXJydXB0IGJlZm9yZSByZWFkaW5nIGxldmVsIGluZGljYXRpb25z LgpUaGlzIHdpbGwgY2xvc2UgYSByYWNlIHdoZXJlIHdlIGdldCBhIGxldmVsIGluZGljYXRpb24g YmV0d2VlbgpyZWFkaW5nIGFuZCBkaXNhYmxpbmcsIGdlbmVyYXRpbmcgYW4gZXh0cmEgaW50ZXJy dXB0IHdoZXJlIHdlCmNvdWxkIGhhdmUgYXZvaWRlZCBvbmUuCgpGdXJ0aGVyLCBhcyB0aGUgcmVh ZGluZyBhY3RzIGFsc28gYXMgYSBwb3N0LCByZXBsYWNlIHRoZQp3cml0ZS9wb3N0IG9uIHRoZSBp cnEgcmVzZXQgd2l0aCB0aGUgaGVscGVyLiBPbiBlbmFibGluZyBzaWRlLApwb3N0aW5nIGRvZXNu J3Qgc2VydmUgYW55IHB1cnBvc2Ugc28gaXQgY2FuIGFsc28gYmUgcmVwbGFjZWQKd2l0aCBoZWxw ZXIuCgpDYzogQ2hyaXMgV2lsc29uIDxjaHJpc0BjaHJpcy13aWxzb24uY28udWs+CkNjOiBWaWxs ZSBTeXJqw6Rsw6QgPHZpbGxlLnN5cmphbGFAbGludXguaW50ZWwuY29tPgpDYzogRGFuaWVsZSBD ZXJhb2xvIFNwdXJpbyA8ZGFuaWVsZS5jZXJhb2xvc3B1cmlvQGludGVsLmNvbT4KU2lnbmVkLW9m Zi1ieTogTWlrYSBLdW9wcGFsYSA8bWlrYS5rdW9wcGFsYUBsaW51eC5pbnRlbC5jb20+Ci0tLQog ZHJpdmVycy9ncHUvZHJtL2k5MTUvaTkxNV9pcnEuYyB8IDM3ICsrKysrKysrKysrKysrKysrKysr KystLS0tLS0tLS0tLQogMSBmaWxlIGNoYW5nZWQsIDI1IGluc2VydGlvbnMoKyksIDEyIGRlbGV0 aW9ucygtKQoKZGlmZiAtLWdpdCBhL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2k5MTVfaXJxLmMgYi9k cml2ZXJzL2dwdS9kcm0vaTkxNS9pOTE1X2lycS5jCmluZGV4IGUwMzEwZWJkOWM4ZC4uNWQxZjUz NzIzMzg4IDEwMDY0NAotLS0gYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pOTE1X2lycS5jCisrKyBi L2RyaXZlcnMvZ3B1L2RybS9pOTE1L2k5MTVfaXJxLmMKQEAgLTMxMjksNiArMzEyOSwyNCBAQCBn ZW4xMV9ndV9taXNjX2lycV9oYW5kbGVyKHN0cnVjdCBkcm1faTkxNV9wcml2YXRlICpkZXZfcHJp diwgY29uc3QgdTMyIGlpcikKIAkJaW50ZWxfb3ByZWdpb25fYXNsZV9pbnRyKGRldl9wcml2KTsK IH0KIAorc3RhdGljIGlubGluZSB1MzIgZ2VuMTFfbWFzdGVyX2ludHJfZGlzYWJsZSh2b2lkIF9f aW9tZW0gKiBjb25zdCByZWdzKQoreworCXJhd19yZWdfd3JpdGUocmVncywgR0VOMTFfR0ZYX01T VFJfSVJRLCAwKTsKKworCS8qCisJICogTm93IHdpdGggbWFzdGVyIGRpc2FibGVkLCBnZXQgYSBz YW1wbGUgb2YgbGV2ZWwgaW5kaWNhdGlvbnMKKwkgKiBmb3IgdGhpcyBpbnRlcnJ1cHQuIEluZGlj YXRpb25zIHdpbGwgYmUgY2xlYXJlZCBvbiByZWxhdGVkIGFja3MuCisJICogTmV3IGluZGljYXRp b25zIGNhbiBhbmQgd2lsbCBsaWdodCB1cCBkdXJpbmcgcHJvY2Vzc2luZywKKwkgKiBhbmQgd2ls bCBnZW5lcmF0ZSBuZXcgaW50ZXJydXB0IGFmdGVyIGVuYWJsaW5nIG1hc3Rlci4KKwkgKi8KKwly ZXR1cm4gcmF3X3JlZ19yZWFkKHJlZ3MsIEdFTjExX0dGWF9NU1RSX0lSUSk7Cit9CisKK3N0YXRp YyBpbmxpbmUgdm9pZCBnZW4xMV9tYXN0ZXJfaW50cl9lbmFibGUodm9pZCBfX2lvbWVtICogY29u c3QgcmVncykKK3sKKwlyYXdfcmVnX3dyaXRlKHJlZ3MsIEdFTjExX0dGWF9NU1RSX0lSUSwgR0VO MTFfTUFTVEVSX0lSUSk7Cit9CisKIHN0YXRpYyBpcnFyZXR1cm5fdCBnZW4xMV9pcnFfaGFuZGxl cihpbnQgaXJxLCB2b2lkICphcmcpCiB7CiAJc3RydWN0IGRybV9pOTE1X3ByaXZhdGUgKiBjb25z dCBpOTE1ID0gdG9faTkxNShhcmcpOwpAQCAtMzEzOSwxMyArMzE1NywxMSBAQCBzdGF0aWMgaXJx cmV0dXJuX3QgZ2VuMTFfaXJxX2hhbmRsZXIoaW50IGlycSwgdm9pZCAqYXJnKQogCWlmICghaW50 ZWxfaXJxc19lbmFibGVkKGk5MTUpKQogCQlyZXR1cm4gSVJRX05PTkU7CiAKLQltYXN0ZXJfY3Rs ID0gcmF3X3JlZ19yZWFkKHJlZ3MsIEdFTjExX0dGWF9NU1RSX0lSUSk7Ci0JbWFzdGVyX2N0bCAm PSB+R0VOMTFfTUFTVEVSX0lSUTsKLQlpZiAoIW1hc3Rlcl9jdGwpCisJbWFzdGVyX2N0bCA9IGdl bjExX21hc3Rlcl9pbnRyX2Rpc2FibGUocmVncyk7CisJaWYgKCFtYXN0ZXJfY3RsKSB7CisJCWdl bjExX21hc3Rlcl9pbnRyX2VuYWJsZShyZWdzKTsKIAkJcmV0dXJuIElSUV9OT05FOwotCi0JLyog RGlzYWJsZSBpbnRlcnJ1cHRzLiAqLwotCXJhd19yZWdfd3JpdGUocmVncywgR0VOMTFfR0ZYX01T VFJfSVJRLCAwKTsKKwl9CiAKIAkvKiBGaW5kLCBjbGVhciwgdGhlbiBwcm9jZXNzIGVhY2ggc291 cmNlIG9mIGludGVycnVwdC4gKi8KIAlnZW4xMV9ndF9pcnFfaGFuZGxlcihpOTE1LCBtYXN0ZXJf Y3RsKTsKQEAgLTMxNjUsOCArMzE4MSw3IEBAIHN0YXRpYyBpcnFyZXR1cm5fdCBnZW4xMV9pcnFf aGFuZGxlcihpbnQgaXJxLCB2b2lkICphcmcpCiAKIAlndV9taXNjX2lpciA9IGdlbjExX2d1X21p c2NfaXJxX2FjayhpOTE1LCBtYXN0ZXJfY3RsKTsKIAotCS8qIEVuYWJsZSBpbnRlcnJ1cHRzLiAq LwotCXJhd19yZWdfd3JpdGUocmVncywgR0VOMTFfR0ZYX01TVFJfSVJRLCBHRU4xMV9NQVNURVJf SVJRKTsKKwlnZW4xMV9tYXN0ZXJfaW50cl9lbmFibGUocmVncyk7CiAKIAlnZW4xMV9ndV9taXNj X2lycV9oYW5kbGVyKGk5MTUsIGd1X21pc2NfaWlyKTsKIApAQCAtMzY1OCw4ICszNjczLDcgQEAg c3RhdGljIHZvaWQgZ2VuMTFfaXJxX3Jlc2V0KHN0cnVjdCBkcm1fZGV2aWNlICpkZXYpCiAJc3Ry dWN0IGRybV9pOTE1X3ByaXZhdGUgKmRldl9wcml2ID0gZGV2LT5kZXZfcHJpdmF0ZTsKIAlpbnQg cGlwZTsKIAotCUk5MTVfV1JJVEUoR0VOMTFfR0ZYX01TVFJfSVJRLCAwKTsKLQlQT1NUSU5HX1JF QUQoR0VOMTFfR0ZYX01TVFJfSVJRKTsKKwlnZW4xMV9tYXN0ZXJfaW50cl9kaXNhYmxlKGRldl9w cml2LT5yZWdzKTsKIAogCWdlbjExX2d0X2lycV9yZXNldChkZXZfcHJpdik7CiAKQEAgLTQzMjMs OCArNDMzNyw3IEBAIHN0YXRpYyBpbnQgZ2VuMTFfaXJxX3Bvc3RpbnN0YWxsKHN0cnVjdCBkcm1f ZGV2aWNlICpkZXYpCiAKIAlJOTE1X1dSSVRFKEdFTjExX0RJU1BMQVlfSU5UX0NUTCwgR0VOMTFf RElTUExBWV9JUlFfRU5BQkxFKTsKIAotCUk5MTVfV1JJVEUoR0VOMTFfR0ZYX01TVFJfSVJRLCBH RU4xMV9NQVNURVJfSVJRKTsKLQlQT1NUSU5HX1JFQUQoR0VOMTFfR0ZYX01TVFJfSVJRKTsKKwln ZW4xMV9tYXN0ZXJfaW50cl9lbmFibGUoZGV2X3ByaXYtPnJlZ3MpOwogCiAJcmV0dXJuIDA7CiB9 Ci0tIAoyLjE3LjEKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fCkludGVsLWdmeCBtYWlsaW5nIGxpc3QKSW50ZWwtZ2Z4QGxpc3RzLmZyZWVkZXNrdG9wLm9y ZwpodHRwczovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2ludGVsLWdm eAo=