From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bhupinder Thakur Subject: Re: [PATCH 1/2] xen: Add support for initializing 16550 UART using ACPI Date: Wed, 8 Nov 2017 11:46:32 +0530 Message-ID: References: <1509617589-22760-1-git-send-email-bhupinder.thakur@linaro.org> <7d3a76da-b7f4-9ab6-e600-620b7040e455@linaro.org> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mail6.bemta6.messagelabs.com ([193.109.254.103]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1eCJf9-0002rT-Kz for xen-devel@lists.xenproject.org; Wed, 08 Nov 2017 06:16:35 +0000 Received: by mail-ua0-f193.google.com with SMTP id l40so1166614uah.2 for ; Tue, 07 Nov 2017 22:16:33 -0800 (PST) In-Reply-To: <7d3a76da-b7f4-9ab6-e600-620b7040e455@linaro.org> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Julien Grall Cc: Stefano Stabellini , Wei Liu , Konrad Rzeszutek Wilk , George Dunlap , Andrew Cooper , Ian Jackson , Tim Deegan , Julien Grall , Jan Beulich , Xen-devel List-Id: xen-devel@lists.xenproject.org SGkgSnVsaWVuLAoKT24gMiBOb3ZlbWJlciAyMDE3IGF0IDE3OjQ1LCBKdWxpZW4gR3JhbGwgPGp1 bGllbi5ncmFsbEBsaW5hcm8ub3JnPiB3cm90ZToKPiBIaSBCaHVwaW5kZXIsCj4KPiBQbGVhc2Ug d3JpdGUgYSBjb3ZlciBsZXR0ZXIgZXZlbiBpZiBpdCBpcyBzbWFsbCB3aGVuIHlvdXIgc2VuZCBh IHNlcmllcyB3aXRoCj4gbXVsdGlwbGUgcGF0Y2hlcy4KPgo+Cj4gT24gMDIvMTEvMTcgMTA6MTMs IEJodXBpbmRlciBUaGFrdXIgd3JvdGU6Cj4+Cj4+IEN1cnJlbnRseSwgWGVuIHN1cHBvcnRzIG9u bHkgRFQgYmFzZWQgaW5pdGlhbGl6YXRpb24gb2YgMTY1NTAgVUFSVC4KPj4gVGhpcyBwYXRjaCBh ZGRzIHN1cHBvcnQgZm9yIGluaXRpYWxpemluZyAxNjU1MCBVQVJUIHVzaW5nIEFDUEkgU1BDUiB0 YWJsZS4KPj4KPj4gU2lnbmVkLW9mZi1ieTogQmh1cGluZGVyIFRoYWt1ciA8Ymh1cGluZGVyLnRo YWt1ckBsaW5hcm8ub3JnPgo+PiAtLS0KPj4gQ0M6IEFuZHJldyBDb29wZXIgPGFuZHJldy5jb29w ZXIzQGNpdHJpeC5jb20+Cj4+IENDOiBHZW9yZ2UgRHVubGFwIDxHZW9yZ2UuRHVubGFwQGV1LmNp dHJpeC5jb20+Cj4+IENDOiBJYW4gSmFja3NvbiA8aWFuLmphY2tzb25AZXUuY2l0cml4LmNvbT4K Pj4gQ0M6IEphbiBCZXVsaWNoIDxqYmV1bGljaEBzdXNlLmNvbT4KPj4gQ0M6IEtvbnJhZCBSemVz enV0ZWsgV2lsayA8a29ucmFkLndpbGtAb3JhY2xlLmNvbT4KPj4gQ0M6IFN0ZWZhbm8gU3RhYmVs bGluaSA8c3N0YWJlbGxpbmlAa2VybmVsLm9yZz4KPj4gQ0M6IFRpbSBEZWVnYW4gPHRpbUB4ZW4u b3JnPgo+PiBDQzogV2VpIExpdSA8d2VpLmxpdTJAY2l0cml4LmNvbT4KPj4gQ0M6IEp1bGllbiBH cmFsbCA8anVsaWVuLmdyYWxsQGFybS5jb20+Cj4+Cj4+ICAgeGVuL2RyaXZlcnMvY2hhci9uczE2 NTUwLmMgIHwgNTcKPj4gKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysr KysrCj4+ICAgeGVuL2luY2x1ZGUveGVuLzgyNTAtdWFydC5oIHwgIDEgKwo+PiAgIDIgZmlsZXMg Y2hhbmdlZCwgNTggaW5zZXJ0aW9ucygrKQo+Pgo+PiBkaWZmIC0tZ2l0IGEveGVuL2RyaXZlcnMv Y2hhci9uczE2NTUwLmMgYi94ZW4vZHJpdmVycy9jaGFyL25zMTY1NTAuYwo+PiBpbmRleCBlMGY4 MTk5Li5iM2Y2ZDg1IDEwMDY0NAo+PiAtLS0gYS94ZW4vZHJpdmVycy9jaGFyL25zMTY1NTAuYwo+ PiArKysgYi94ZW4vZHJpdmVycy9jaGFyL25zMTY1NTAuYwo+PiBAQCAtMTUzOCw2ICsxNTM4LDYz IEBAIERUX0RFVklDRV9TVEFSVChuczE2NTUwLCAiTlMxNjU1MCBVQVJUIiwKPj4gREVWSUNFX1NF UklBTCkKPj4gICBEVF9ERVZJQ0VfRU5ECj4+ICAgICAjZW5kaWYgLyogSEFTX0RFVklDRV9UUkVF ICovCj4+ICsKPj4gKyNpZmRlZiBDT05GSUdfQUNQSQo+Cj4KPiBUaGUgY29kZSBiZWxvdyBpcyBn b2luZyB0byBicmVhayB4ODYgYnVpbGQuIFlvdSBuZWVkIHRvIGRvICNpZgo+IGRlZmluZWQoQ09O RklHX0FDUEkpICYmIGRlZmluZWQoQ09ORklHX0FSTSkKPgo+Cj4+ICsjaW5jbHVkZSA8eGVuL2Fj cGkuaD4KPj4gKwo+PiArc3RhdGljIGludCBfX2luaXQgbnMxNjU1MF9hY3BpX3VhcnRfaW5pdChj b25zdCB2b2lkICpkYXRhKQo+PiArewo+PiArICAgIHN0cnVjdCBuczE2NTUwICp1YXJ0Owo+PiAr ICAgIGFjcGlfc3RhdHVzIHN0YXR1czsKPj4gKyAgICBzdHJ1Y3QgYWNwaV90YWJsZV9zcGNyICpz cGNyID0gTlVMTDsKPj4gKwo+PiArICAgIHN0YXR1cyA9IGFjcGlfZ2V0X3RhYmxlKEFDUElfU0lH X1NQQ1IsIDAsCj4+ICsgICAgICAgICAgICAgICAgICAgICAgICAgICAgKHN0cnVjdCBhY3BpX3Rh YmxlX2hlYWRlciAqKikmc3Bjcik7Cj4+ICsKPj4gKyAgICBpZiAoIEFDUElfRkFJTFVSRShzdGF0 dXMpICkKPj4gKyAgICB7Cj4+ICsgICAgICAgIHByaW50aygibnMxNjU1MDogRmFpbGVkIHRvIGdl dCBTUENSIHRhYmxlXG4iKTsKPj4gKyAgICAgICAgcmV0dXJuIC1FSU5WQUw7Cj4+ICsgICAgfQo+ PiArCj4+ICsgICAgdWFydCA9ICZuczE2NTUwX2NvbVswXTsKPj4gKwo+PiArICAgIG5zMTY1NTBf aW5pdF9jb21tb24odWFydCk7Cj4+ICsKPj4gKyAgICB1YXJ0LT5iYXVkICAgICAgPSBCQVVEX0FV VE87Cj4+ICsgICAgdWFydC0+ZGF0YV9iaXRzID0gODsKPj4gKyAgICB1YXJ0LT5wYXJpdHkgICAg PSBzcGNyLT5wYXJpdHk7Cj4+ICsgICAgdWFydC0+c3RvcF9iaXRzID0gc3Bjci0+c3RvcF9iaXRz Owo+PiArICAgIHVhcnQtPmlvX2Jhc2UgPSBzcGNyLT5zZXJpYWxfcG9ydC5hZGRyZXNzOwo+PiAr ICAgIHVhcnQtPmlycSA9IHNwY3ItPmludGVycnVwdDsKPj4gKyAgICB1YXJ0LT5yZWdfd2lkdGgg PSBzcGNyLT5zZXJpYWxfcG9ydC5iaXRfd2lkdGgvODsKPgo+Cj4gd2lkdGggLyA4Owo+Cj4+ICsg ICAgdWFydC0+cmVnX3NoaWZ0ID0gMDsKPj4gKyAgICB1YXJ0LT5pb19zaXplID0gVUFSVF9NQVhf UkVHPDx1YXJ0LT5yZWdfc2hpZnQ7Cj4KPgo+IHNwYWNlIGJlZm9yZSBhbmQgYWZ0ZXIgPDwuCj4K PiBBbHNvLCBpb19zaXplIHNlZW1zIHRvIGJlIGNvbXB1dGVkIGRpZmZlcmVudGx5IGluIHBjaV91 YXJ0X2NvbmZpZy4gSSBhbSBub3QKPiBzdXJlIHdoeSB0aGUgZGlmZmVyZW5jZSBoZXJlPwoKSW4g cGNpX3VhcnRfY29uZmlnOgoKdWFydC0+aW9fc2l6ZSA9IG1heCg4VSA8PCBwYXJhbS0+cmVnX3No aWZ0LAogICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICBwYXJhbS0+dWFydF9vZmZzZXQp OwoKSSB3YXMgbm90IHN1cmUgd2hpY2ggcGFyYW0gdG8gY29uc2lkZXIgdG8gZ2V0IHRoZSB1YXJ0 X29mZnNldC4gU2luY2UKdGhlIG1heCByZWdpc3RlciB0aGF0IG5zMTY1NTAgdXNlcyBpcyBVQVJU X1VTUiwgSQpjYWxjdWxhdGVkIHRoZSBpb19zaXplIGJhc2VkIG9uIHRoYXQuCj4KPj4gKwo+PiAr ICAgIGlycV9zZXRfdHlwZShzcGNyLT5pbnRlcnJ1cHQsIHNwY3ItPmludGVycnVwdF90eXBlKTsK Pj4gKwo+PiArICAgIHVhcnQtPnZ1YXJ0LmJhc2VfYWRkciA9IHVhcnQtPmlvX2Jhc2U7Cj4+ICsg ICAgdWFydC0+dnVhcnQuc2l6ZSA9IHVhcnQtPmlvX3NpemU7Cj4+ICsgICAgdWFydC0+dnVhcnQu ZGF0YV9vZmYgPSBVQVJUX1RIUiA8PHVhcnQtPnJlZ19zaGlmdDsKPgo+Cj4gRGl0dG8gZm9yIHRo ZSBzcGFjZS4KPgo+PiArICAgIHVhcnQtPnZ1YXJ0LnN0YXR1c19vZmYgPSBVQVJUX0xTUjw8dWFy dC0+cmVnX3NoaWZ0Owo+Cj4KPiBEaXR0by4KPgo+PiArICAgIHVhcnQtPnZ1YXJ0LnN0YXR1cyA9 IFVBUlRfTFNSX1RIUkV8VUFSVF9MU1JfVEVNVDsKPgo+Cj4gRGl0dG8uCj4KPiBBbHNvLCB0aGUg Y29kZSBsb29rcyB2ZXJ5IHNpbWlsYXIgdG8gdGhlIERUIHZlcnNpb24uIElzIHRoZXJlIGFueSB3 YXkgdG8KPiBzaGFyZSBpdD8KPgo+Cj4+ICsKPj4gKyAgICAvKiBSZWdpc3RlciB3aXRoIGdlbmVy aWMgc2VyaWFsIGRyaXZlci4gKi8KPj4gKyAgICBzZXJpYWxfcmVnaXN0ZXJfdWFydCh1YXJ0IC0g bnMxNjU1MF9jb20sICZuczE2NTUwX2RyaXZlciwgdWFydCk7Cj4+ICsKPj4gKyAgICByZXR1cm4g MDsKPj4gK30KPj4gKwo+PiArQUNQSV9ERVZJQ0VfU1RBUlQobnMxNjU1MGMsICIxNjU1MCBDT01Q QVQgVUFSVCIsIERFVklDRV9TRVJJQUwpCj4+ICsgICAgICAgIC5jbGFzc190eXBlID0gQUNQSV9E QkcyXzE2NTUwX0NPTVBBVElCTEUsCj4+ICsgICAgICAgIC5pbml0ID0gbnMxNjU1MF9hY3BpX3Vh cnRfaW5pdCwKPj4gK0FDUElfREVWSUNFX0VORAo+PiArQUNQSV9ERVZJQ0VfU1RBUlQobnMxNjU1 MHMsICIxNjU1MCBTVUJTRVQgVUFSVCIsIERFVklDRV9TRVJJQUwpCj4+ICsgICAgICAgIC5jbGFz c190eXBlID0gQUNQSV9EQkcyXzE2NTUwX1NVQlNFVCwKPj4gKyAgICAgICAgLmluaXQgPSBuczE2 NTUwX2FjcGlfdWFydF9pbml0LAo+PiArQUNQSV9ERVZJQ0VfRU5ECj4+ICsKPj4gKyNlbmRpZgo+ PiAgIC8qCj4+ICAgICogTG9jYWwgdmFyaWFibGVzOgo+PiAgICAqIG1vZGU6IEMKPj4gZGlmZiAt LWdpdCBhL3hlbi9pbmNsdWRlL3hlbi84MjUwLXVhcnQuaCBiL3hlbi9pbmNsdWRlL3hlbi84MjUw LXVhcnQuaAo+PiBpbmRleCA1YzNiYWMzLi4xYjNlMTM3IDEwMDY0NAo+PiAtLS0gYS94ZW4vaW5j bHVkZS94ZW4vODI1MC11YXJ0LmgKPj4gKysrIGIveGVuL2luY2x1ZGUveGVuLzgyNTAtdWFydC5o Cj4+IEBAIC0zNSw2ICszNSw3IEBACj4+ICAgI2RlZmluZSBVQVJUX1VTUiAgICAgICAgICAweDFm ICAgIC8qIFN0YXR1cyByZWdpc3RlciAoRFcpICovCj4+ICAgI2RlZmluZSBVQVJUX0RMTCAgICAg ICAgICAweDAwICAgIC8qIGRpdmlzb3IgbGF0Y2ggKGxzKSAoRExBQj0xKSAqLwo+PiAgICNkZWZp bmUgVUFSVF9ETE0gICAgICAgICAgMHgwMSAgICAvKiBkaXZpc29yIGxhdGNoIChtcykgKERMQUI9 MSkgKi8KPj4gKyNkZWZpbmUgVUFSVF9NQVhfUkVHICAgICAgKFVBUlRfVVNSKzEpCj4+ICAgICAv KiBJbnRlcnJ1cHQgRW5hYmxlIFJlZ2lzdGVyICovCj4+ICAgI2RlZmluZSBVQVJUX0lFUl9FUkRB SSAgICAweDAxICAgIC8qIHJ4IGRhdGEgcmVjdidkICAgICAgICovCj4+Cj4KPiBDaGVlcnMsCj4K PiAtLQo+IEp1bGllbiBHcmFsbAoKUmVnYXJkcywKQmh1cGluZGVyCgpfX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpYZW4tZGV2ZWwgbWFpbGluZyBsaXN0Clhl bi1kZXZlbEBsaXN0cy54ZW4ub3JnCmh0dHBzOi8vbGlzdHMueGVuLm9yZy94ZW4tZGV2ZWwK