From mboxrd@z Thu Jan 1 00:00:00 1970 From: Joonas Lahtinen Subject: Re: [PATCH 5/8] drm/i915: Wait for writes through the GTT to land before reading back Date: Thu, 09 Jun 2016 15:54:44 +0300 Message-ID: <1465476884.9670.28.camel@linux.intel.com> References: <1465471779-20765-1-git-send-email-chris@chris-wilson.co.uk> <1465471779-20765-6-git-send-email-chris@chris-wilson.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by gabe.freedesktop.org (Postfix) with ESMTP id AE2776EBB2 for ; Thu, 9 Jun 2016 12:54:48 +0000 (UTC) In-Reply-To: <1465471779-20765-6-git-send-email-chris@chris-wilson.co.uk> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Chris Wilson , intel-gfx@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org T24gdG8sIDIwMTYtMDYtMDkgYXQgMTI6MjkgKzAxMDAsIENocmlzIFdpbHNvbiB3cm90ZToKPiBJ ZiB3ZSBxdWlja2x5IHN3aXRjaCBmcm9tIHdyaXRpbmcgdGhyb3VnaCB0aGUgR1RUIHRvIGEgcmVh ZCBvZiB0aGUKPiBwaHlzaWNhbCBwYWdlIGRpcmVjdGx5IHdpdGggdGhlIENQVSAoZS5nLiBwZXJm b3JtaW5nIHJlbG9jYXRpb25zIHRocm91Z2gKPiB0aGUgR1RUIGFuZCB0aGVuIHJ1bm5pbmcgdGhl IGNvbW1hbmQgcGFyc2VyKSwgd2UgY2FuIG9ic2VydmUgdGhhdCB0aGUKPiB3cml0ZXMgYXJlIG5v dCB2aXNpYmxlIHRvIHRoZSBDUFUuIEl0IGlzIG5vdCBhIGNvaGVyZW5jeSBwcm9ibGVtLCBhcwo+ IGV4dGVuc2l2ZSBpbnZlc3RpZ2F0aW9ucyB3aXRoIGNsZmx1c2ggaGF2ZSBkZW1vbnN0cmF0ZWQs IGJ1dCBhIG1lcmUKPiB0aW1pbmcgaXNzdWUgLSB3ZSBoYXZlIHRvIHdhaXQgZm9yIHRoZSBHVFQg dG8gY29tcGxldGUgaXQncyB3cml0ZSBiZWZvcmUKPiB3ZSBzdGFydCBvdXIgcmVhZCBmcm9tIHRo ZSBDUFUuCj4gCj4gVGhlIGlzc3VlIGNhbiBiZSBpbGx1c3RyYXRlZCBpbiB1c2Vyc3BhY2Ugd2l0 aDoKPiAKPiAJZ3R0ID0gZ2VtX21tYXBfX2d0dChmZCwgaGFuZGxlLCAwLCBPQkpFQ1RfU0laRSwg UFJPVF9SRUFEIHwgUFJPVF9XUklURSk7Cj4gCWNwdSA9IGdlbV9tbWFwX19jcHUoZmQsIGhhbmRs ZSwgMCwgT0JKRUNUX1NJWkUsIFBST1RfUkVBRCB8IFBST1RfV1JJVEUpOwo+IAlnZW1fc2V0X2Rv bWFpbihmZCwgaGFuZGxlLCBJOTE1X0dFTV9ET01BSU5fR1RULCBJOTE1X0dFTV9ET01BSU5fR1RU KTsKPiAKPiAJZm9yIChpID0gMDsgaSA8IE9CSkVDVF9TSVpFIC8gNjQ7IGkrKykgewo+IAkJaW50 IHggPSAxNippICsgKGklMTYpOwo+IAkJZ3R0W3hdID0gaTsKPiAJCWNsZmx1c2goJmNwdVt4XSwg c2l6ZW9mKGNwdVt4XSkpOwo+IAkJYXNzZXJ0KGNwdVt4XSA9PSBpKTsKPiAJfQo+IAo+IEV4cGVy aW1lbnRpbmcgd2l0aCB0aGF0IHNob3dzIHRoYXQgdGhpcyBiZWhhdmlvdXIgaXMgaW5kZWVkIGxp bWl0ZWQgdG8KPiByZWNlbnQgQXRvbS1jbGFzcyBoYXJkd2FyZS4KPiAKPiBTaWduZWQtb2ZmLWJ5 OiBDaHJpcyBXaWxzb24gPGNocmlzQGNocmlzLXdpbHNvbi5jby51az4KPiAtLS0KPiDCoGRyaXZl cnMvZ3B1L2RybS9pOTE1L2k5MTVfZ2VtLmMgfCAxMiArKysrKysrKysrKy0KPiDCoDEgZmlsZSBj aGFuZ2VkLCAxMSBpbnNlcnRpb25zKCspLCAxIGRlbGV0aW9uKC0pCj4gCj4gZGlmZiAtLWdpdCBh L2RyaXZlcnMvZ3B1L2RybS9pOTE1L2k5MTVfZ2VtLmMgYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9p OTE1X2dlbS5jCj4gaW5kZXggMThiNGE2ODRkZGRlLi5mZmUzZDNlOWQ2OWQgMTAwNjQ0Cj4gLS0t IGEvZHJpdmVycy9ncHUvZHJtL2k5MTUvaTkxNV9nZW0uYwo+ICsrKyBiL2RyaXZlcnMvZ3B1L2Ry bS9pOTE1L2k5MTVfZ2VtLmMKPiBAQCAtMjg5OCwyMCArMjg5OCwzMCBAQCBpOTE1X2dlbV9jbGZs dXNoX29iamVjdChzdHJ1Y3QgZHJtX2k5MTVfZ2VtX29iamVjdCAqb2JqLAo+IMKgc3RhdGljIHZv aWQKPiDCoGk5MTVfZ2VtX29iamVjdF9mbHVzaF9ndHRfd3JpdGVfZG9tYWluKHN0cnVjdCBkcm1f aTkxNV9nZW1fb2JqZWN0ICpvYmopCj4gwqB7Cj4gKwlzdHJ1Y3QgZHJtX2k5MTVfcHJpdmF0ZSAq ZGV2X3ByaXYgPSB0b19pOTE1KG9iai0+YmFzZS5kZXYpOwo+IMKgCXVpbnQzMl90IG9sZF93cml0 ZV9kb21haW47Cj4gwqAKPiDCoAlpZiAob2JqLT5iYXNlLndyaXRlX2RvbWFpbiAhPSBJOTE1X0dF TV9ET01BSU5fR1RUKQo+IMKgCQlyZXR1cm47Cj4gwqAKPiDCoAkvKiBObyBhY3R1YWwgZmx1c2hp bmcgaXMgcmVxdWlyZWQgZm9yIHRoZSBHVFQgd3JpdGUgZG9tYWluLsKgwqBXcml0ZXMKPiAtCcKg KiB0byBpdCBpbW1lZGlhdGVseSBnbyB0byBtYWluIG1lbW9yeSBhcyBmYXIgYXMgd2Uga25vdywg c28gdGhlcmUncwo+ICsJwqAqIHRvIGl0ICJpbW1lZGlhdGVseSIgZ28gdG8gbWFpbiBtZW1vcnkg YXMgZmFyIGFzIHdlIGtub3csIHNvIHRoZXJlJ3MKPiDCoAnCoCogbm8gY2hpcHNldCBmbHVzaC7C oMKgSXQgYWxzbyBkb2Vzbid0IGxhbmQgaW4gcmVuZGVyIGNhY2hlLgo+IMKgCcKgKgo+IMKgCcKg KiBIb3dldmVyLCB3ZSBkbyBoYXZlIHRvIGVuZm9yY2UgdGhlIG9yZGVyIHNvIHRoYXQgYWxsIHdy aXRlcyB0aHJvdWdoCj4gwqAJwqAqIHRoZSBHVFQgbGFuZCBiZWZvcmUgYW55IHdyaXRlcyB0byB0 aGUgZGV2aWNlLCBzdWNoIGFzIHVwZGF0ZXMgdG8KPiDCoAnCoCogdGhlIEdBVFQgaXRzZWxmLgo+ ICsJwqAqCj4gKwnCoCogV2UgYWxzbyBoYXZlIHRvIHdhaXQgYSBiaXQgZm9yIHRoZSB3cml0ZXMg dG8gbGFuZCBmcm9tIHRoZSBHVFQuCj4gKwnCoCogQW4gdW5jYWNoZWQgcmVhZCAoaS5lLiBtbWlv KSBzZWVtcyB0byBiZSBpZGVhbCBmb3IgdGhlIHJvdW5kLXRyaXAKPiArCcKgKiB0aW1pbmcuIFRo aXMgaXNzdWUgaGFzIG9ubHkgYmVlbiBvYnNlcnZlZCB3aGVuIHN3aXRjaGluZyBxdWlja2x5Cj4g KwnCoCogYmV0d2VlbiBHVFQgd3JpdGVzIGFuZCBDUFUgcmVhZHMgZnJvbSBpbnNpZGUgdGhlIGtl cm5lbCBvbiByZWNlbnQgaHcsCj4gKwnCoCogYW5kIGl0IGFwcGVhcnMgdG8gb25seSBhZmZlY3Qg ZGlzY3JldGUgR1RUIGJsb2NrcyAoaS5lLiBvbiBMTEMKPiArCcKgKiBzeXN0ZW0gYWdlbnRzIHdl IGNhbm5vdCByZXByb2R1Y2UgdGhpcyBiZWhhdmlvdXIpLgoKVGhpcyBzY3JlYW1zIGZvciBhIFRl c3RlZC1ieTogdGFnIGJlZm9yZSBtZXJnaW5nLi4uCgo+IMKgCcKgKi8KPiDCoAl3bWIoKTsKPiAr CWlmIChJTlRFTF9JTkZPKGRldl9wcml2KS0+Z2VuID49IDYgJiYgIUhBU19MTEMoZGV2X3ByaXYp KQoKSU5URUxfR0VOKCkKClRoaXMgZml4ZWQsIGFuZCBhZGRpbmcgdGhlIFRlc3RjYXNlOiBsYWJl bAoKUmV2aWV3ZWQtYnk6IEpvb25hcyBMYWh0aW5lbiA8am9vbmFzLmxhaHRpbmVuQGxpbnV4Lmlu dGVsLmNvbT4KCj4gKwkJUE9TVElOR19SRUFEKFJJTkdfQUNUSEQoZGV2X3ByaXYtPmVuZ2luZVtS Q1NdLm1taW9fYmFzZSkpOwo+IMKgCj4gwqAJb2xkX3dyaXRlX2RvbWFpbiA9IG9iai0+YmFzZS53 cml0ZV9kb21haW47Cj4gwqAJb2JqLT5iYXNlLndyaXRlX2RvbWFpbiA9IDA7Ci0tIApKb29uYXMg TGFodGluZW4KT3BlbiBTb3VyY2UgVGVjaG5vbG9neSBDZW50ZXIKSW50ZWwgQ29ycG9yYXRpb24K X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KSW50ZWwtZ2Z4 IG1haWxpbmcgbGlzdApJbnRlbC1nZnhAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHBzOi8vbGlz dHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8vaW50ZWwtZ2Z4Cg==