From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tarun Vyas Subject: [PATCH v2] drm/i915/psr: Lockless version of psr_wait_for_idle Date: Fri, 22 Jun 2018 00:05:21 -0700 Message-ID: <20180622070521.169995-1-tarun.vyas@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 B57416E879 for ; Fri, 22 Jun 2018 07:05:25 +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 Cc: dhinakaran.pandiyan@intel.com, rodrigo.vivi@intel.com List-Id: intel-gfx@lists.freedesktop.org VGhpcyBpcyBhIGxvY2tsZXNzIHZlcnNpb24gb2YgdGhlIGV4aXNpdGluZyBwc3Jfd2FpdF9mb3Jf aWRsZSgpLgpXZSB3YW50IHRvIHdhaXQgZm9yIFBTUiB0byBpZGxlIG91dCBpbnNpZGUgaW50ZWxf cGlwZV91cGRhdGVfc3RhcnQuCkF0IHRoZSB0aW1lIG9mIGEgcGlwZSB1cGRhdGUsIHdlIHNob3Vs ZCBuZXZlciByYWNlIHdpdGggYW55IHBzcgplbmFibGUgb3IgZGlzYWJsZSBjb2RlLCB3aGljaCBp cyBhIHBhcnQgb2YgY3J0YyBlbmFibGUvZGlzYWJsZS4gU28sCndlIGNhbiBsaXZlIHcvbyB0YWtp bmcgYW55IHBzciBsb2NrcyBhdCBhbGwuClRoZSBmb2xsb3cgdXAgcGF0Y2ggd2lsbCB1c2UgdGhp cyBsb2NrbGVzcyB3YWl0IGluc2lkZSBwaXBlX3VwZGF0ZV8Kc3RhcnQgdG8gd2FpdCBmb3IgUFNS IHRvIGlkbGUgb3V0IGJlZm9yZSBjaGVja2luZyBmb3IgdmJsYW5rIGV2YXNpb24uCgpFdmVuIGlm IHBzciBpcyBuZXZlciBlbmFibGVkLCBwc3IyX2VuYWJsZWQgd2lsbCBiZSBmYWxzZSBhbmQgdGhp cwpmdW5jdGlvbiB3aWxsIHdhaXQgZm9yIFBTUjEgdG8gaWRsZSBvdXQsIHdoaWNoIHNob3VsZCBq dXN0IHJldHVybgppbW1lZGlhdGVseSwgc28gYSB2ZXJ5IHNob3J0ICh+MS0yIHVzZWMpIHdhaXQg Zm9yIGNhc2VzIHdoZXJlIFBTUgppcyBkaXNhYmxlZC4KCnYyOiBBZGQgY29tbWVudCB0byBleHBs YWluIHRoZSAyNW1zZWMgdGltZW91dCAoREspCgpTaWduZWQtb2ZmLWJ5OiBUYXJ1biBWeWFzIDx0 YXJ1bi52eWFzQGludGVsLmNvbT4KLS0tCiBkcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9kcnYu aCB8ICAxICsKIGRyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX3Bzci5jIHwgMjQgKysrKysrKysr KysrKysrKysrKysrKysrCiAyIGZpbGVzIGNoYW5nZWQsIDI1IGluc2VydGlvbnMoKykKCmRpZmYg LS1naXQgYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9kcnYuaCBiL2RyaXZlcnMvZ3B1L2Ry bS9pOTE1L2ludGVsX2Rydi5oCmluZGV4IDU3ODM0NmI4ZDdlMi4uYTQ4YWFkMGY5OWJmIDEwMDY0 NAotLS0gYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9kcnYuaAorKysgYi9kcml2ZXJzL2dw dS9kcm0vaTkxNS9pbnRlbF9kcnYuaApAQCAtMTkyMCw2ICsxOTIwLDcgQEAgdm9pZCBpbnRlbF9w c3JfY29tcHV0ZV9jb25maWcoc3RydWN0IGludGVsX2RwICppbnRlbF9kcCwKIAkJCSAgICAgIHN0 cnVjdCBpbnRlbF9jcnRjX3N0YXRlICpjcnRjX3N0YXRlKTsKIHZvaWQgaW50ZWxfcHNyX2lycV9j b250cm9sKHN0cnVjdCBkcm1faTkxNV9wcml2YXRlICpkZXZfcHJpdiwgYm9vbCBkZWJ1Zyk7CiB2 b2lkIGludGVsX3Bzcl9pcnFfaGFuZGxlcihzdHJ1Y3QgZHJtX2k5MTVfcHJpdmF0ZSAqZGV2X3By aXYsIHUzMiBwc3JfaWlyKTsKK3ZvaWQgcHNyX3dhaXRfZm9yX2lkbGVfbG9ja2xlc3Moc3RydWN0 IGRybV9pOTE1X3ByaXZhdGUgKmRldl9wcml2KTsKIAogLyogaW50ZWxfcnVudGltZV9wbS5jICov CiBpbnQgaW50ZWxfcG93ZXJfZG9tYWluc19pbml0KHN0cnVjdCBkcm1faTkxNV9wcml2YXRlICop OwpkaWZmIC0tZ2l0IGEvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfcHNyLmMgYi9kcml2ZXJz L2dwdS9kcm0vaTkxNS9pbnRlbF9wc3IuYwppbmRleCBhZWE4MWFjZTg1NGIuLjhlNjllNjE5MzA2 MyAxMDA2NDQKLS0tIGEvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfcHNyLmMKKysrIGIvZHJp dmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfcHNyLmMKQEAgLTc1Nyw2ICs3NTcsMzAgQEAgdm9pZCBp bnRlbF9wc3JfZGlzYWJsZShzdHJ1Y3QgaW50ZWxfZHAgKmludGVsX2RwLAogCWNhbmNlbF93b3Jr X3N5bmMoJmRldl9wcml2LT5wc3Iud29yayk7CiB9CiAKK3ZvaWQgcHNyX3dhaXRfZm9yX2lkbGVf bG9ja2xlc3Moc3RydWN0IGRybV9pOTE1X3ByaXZhdGUgKmRldl9wcml2KQoreworCWk5MTVfcmVn X3QgcmVnOworCXUzMiBtYXNrOworCWludCBlcnI7CisKKwlpZiAoZGV2X3ByaXYtPnBzci5wc3Iy X2VuYWJsZWQpIHsKKwkJcmVnID0gRURQX1BTUjJfU1RBVFVTOworCQltYXNrID0gRURQX1BTUjJf U1RBVFVTX1NUQVRFX01BU0s7CisJfSBlbHNlIHsKKwkJcmVnID0gRURQX1BTUl9TVEFUVVM7CisJ CW1hc2sgPSBFRFBfUFNSX1NUQVRVU19TVEFURV9NQVNLOworCX0KKworCS8qCisJICogVGhlICAy NSBtc2VjIHRpbWVvdXQgYWNjb3VudHMgZm9yIGEgZnJhbWUgQCA2MEh6IHJlZnJlc2ggcmF0ZSwK KwkgKiBleGl0IHRyYWluaW5nIGFuIGF1eCBoYW5kc2hha2UgdGltZS4KKwkgKi8KKwllcnIgPSBp bnRlbF93YWl0X2Zvcl9yZWdpc3RlcihkZXZfcHJpdiwgcmVnLCBtYXNrLAorCQkJCSAgICAgIEVE UF9QU1JfU1RBVFVTX1NUQVRFX0lETEUsIDI1KTsKKwlpZiAoZXJyKQorCQlEUk1fRVJST1IoIlRp bWVkIG91dCB3YWl0aW5nIGZvciBQU1IgSWRsZSBmb3IgcGlwZSB1cGRhdGVcbiIpOworfQorCiBz dGF0aWMgYm9vbCBwc3Jfd2FpdF9mb3JfaWRsZShzdHJ1Y3QgZHJtX2k5MTVfcHJpdmF0ZSAqZGV2 X3ByaXYpCiB7CiAJc3RydWN0IGludGVsX2RwICppbnRlbF9kcDsKLS0gCjIuMTMuNQoKX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KSW50ZWwtZ2Z4IG1haWxp bmcgbGlzdApJbnRlbC1nZnhAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHBzOi8vbGlzdHMuZnJl ZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8vaW50ZWwtZ2Z4Cg==