From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED,USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EE898C04EBD for ; Tue, 16 Oct 2018 08:28:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A988E205C9 for ; Tue, 16 Oct 2018 08:28:34 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A988E205C9 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-wireless-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726904AbeJPQRu (ORCPT ); Tue, 16 Oct 2018 12:17:50 -0400 Received: from mx1.redhat.com ([209.132.183.28]:50036 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726539AbeJPQRt (ORCPT ); Tue, 16 Oct 2018 12:17:49 -0400 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 0A7A9314F9CB; Tue, 16 Oct 2018 08:28:33 +0000 (UTC) Received: from localhost (unknown [10.43.2.63]) by smtp.corp.redhat.com (Postfix) with ESMTP id 86259690E7; Tue, 16 Oct 2018 08:28:32 +0000 (UTC) Date: Tue, 16 Oct 2018 10:28:31 +0200 From: Stanislaw Gruszka To: yhchuang@realtek.com Cc: kvalo@codeaurora.org, Larry.Finger@lwfinger.net, pkshih@realtek.com, tehuang@realtek.com, johannes@sipsolutions.net, linux-wireless@vger.kernel.org Subject: Re: [RFC v4 00/13] rtw88: mac80211 driver for Realtek 802.11ac wireless network chips Message-ID: <20181016082831.GB4401@redhat.com> References: <1539421245-11847-1-git-send-email-yhchuang@realtek.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1539421245-11847-1-git-send-email-yhchuang@realtek.com> User-Agent: Mutt/1.5.21 (2010-09-15) X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.49]); Tue, 16 Oct 2018 08:28:33 +0000 (UTC) Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org On Sat, Oct 13, 2018 at 05:00:32PM +0800, yhchuang@realtek.com wrote: > From: Yan-Hsuan Chuang > > This is a new mac80211 driver for Realtek 802.11ac wireless network chips. > rtw88 supports 8822BE and 8822CE chips, and will be able to support > multi-vif combinations in run-time. > > For now, only PCI bus is supported, but rtw88 was originally designed > to optionally support three buses includes USB & SDIO. USB & SDIO modules > will soon be supported by rtw88, with configurable core module to fit > with different bus modules in the same time. > > For example, if we choose 8822BE and 8822CU, only PCI & USB modules will > be selected, built, loaded into kernel. This is one of the major > difference from rtlwifi, which can only support specific combinations. > > Another difference from rtlwifi is that rtw88 is designed to support > the latest Realtek 802.11ac wireless network chips like 8822B and > 8822C series. Compared to the earlier chips supported by rtlwifi like > the 802.11n 8192EE chipset or 802.11ac 8821AE/8812AE chips, newer ICs > have different MAC & PHY settings, such as new multi-port feature for the > MAC layer design and Jaguar2/Jaguar3 PHY layer IPs. > > Multi-Port feature is also supported under rtw88's software architecture. > rtlwifi can only support one vif in the same time, most because of the > hardware limitations for early chips, hence the original design of it > also restricts the usage of multi-vif support, so latest chipset seems not > take advantages from its new MAC engine. > > However, rtw88 can run multiple vifs concurrently by holding them on > hardware ports provided by MAC engine, hence can easily start different > roles on a single device. > > Based on the reasons mentioned before, we implemented rtw88. It had many > authors, they are listed here alphabetically: > > Ping-Ke Shih > Tzu-En Huang > Yan-Hsuan Chuang For the series: Reviewed-by: Stanislaw Gruszka