From owner-freebsd-wireless@freebsd.org Tue Dec 26 20:10:59 2017 Return-Path: Delivered-To: freebsd-wireless@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 2193DEAC701 for ; Tue, 26 Dec 2017 20:10:59 +0000 (UTC) (envelope-from kevin@jiazuo.cc) Received: from mail139-36.mail.alibaba.com (mail139-36.mail.alibaba.com [198.11.139.36]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id A7677653D9 for ; Tue, 26 Dec 2017 20:10:57 +0000 (UTC) (envelope-from kevin@jiazuo.cc) X-Alimail-AntiSpam: AC=CONTINUE; BC=0.11956|-1; CH=green; FP=0|0|0|0|0|-1|-1|-1; HT=e02c03278; MF=kevin@jiazuo.cc; NM=1; PH=DW; RN=1; RT=1; SR=0; TI=W4_5135885_0A93263F_1514318960576_o7001c1519; Received: from WS-web (kevin@jiazuo.cc[W4_5135885_0A93263F_1514318960576_o7001c1519]) by e01l04446.eu6 at Wed, 27 Dec 2017 04:10:45 +0800 Date: Wed, 27 Dec 2017 04:10:45 +0800 From: "kevin" To: "freebsd-wireless" Reply-To: "kevin" Message-ID: <234dd0df-76a5-474a-9e7f-8d0d4ef36b48.kevin@jiazuo.cc> Subject: =?UTF-8?B?UHJvYmxlbTogcnVubmluZyBpd20gODI2NSBmYWlsZWQgb24gQ1VSUkVOVC4=?= X-Mailer: [Alimail-Mailagent revision 286] MIME-Version: 1.0 x-aliyun-mail-creator: W4_5135885_QvNTW96aWxsYS81LjAgKE1hY2ludG9zaDsgSW50ZWwgTWFjIE9TIFggMTBfMTNfMikgQXBwbGVXZWJLaXQvNjA0LjQuNyAoS0hUTUwsIGxpa2UgR2Vja28pIFZlcnNpb24vMTEuMC4yIFNhZmFyaS82MDQuNC43La Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: base64 X-Content-Filtered-By: Mailman/MimeDel 2.1.25 X-BeenThere: freebsd-wireless@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: "Discussions of 802.11 stack, tools device driver development." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 26 Dec 2017 20:10:59 -0000 SGksCkkndmUgaW5zdGFsbGVkIDEyLUNVUlJFTlQgb24gYSBYMSBjYXJib24gMjAxNywgwqB3aXRo IEludGVsIER1YWwgQmFuZCBXaXJlbGVzcyBBQyA4MjY1LCBidXQgZmFpbGVkIHdoZW4gcnVubmlu ZyB3cGFfc3VwcGxpY2FudCwKaGVyZSBhcmUgZnVsbCBkZXRhaWxzOgoKcm9vdCMgaWZjb25maWcg d2xhbjAtLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLXdsYW4w OiBmbGFncz04ODAyPEJST0FEQ0FTVCxTSU1QTEVYLE1VTFRJQ0FTVD4gbWV0cmljIDAgbXR1IDE1 MDDCoCDCoCBldGhlciBmODo5NDpjMjoyZDo3ODpiZcKgIMKgIGh3YWRkciBmODo5NDpjMjoyZDo3 ODpiZcKgIMKgIG5kNiBvcHRpb25zPTI5PFBFUkZPUk1OVUQsSUZESVNBQkxFRCxBVVRPX0xJTktM T0NBTD7CoCDCoCBtZWRpYTogSUVFRSA4MDIuMTEgV2lyZWxlc3MgRXRoZXJuZXQgYXV0b3NlbGVj dCAoYXV0b3NlbGVjdCnCoCDCoCBzdGF0dXM6IG5vIGNhcnJpZXLCoCDCoCBzc2lkICIiIGNoYW5u ZWwgMSAoMjQxMiBNSHogMTFiKcKgIMKgIGF1dGhtb2RlIE9QRU4gcHJpdmFjeSBPRkYgdHhwb3dl ciAwIGJtaXNzIDEwIHNjYW52YWxpZCA2MCB3bWXCoCDCoCBncm91cHM6IHdsYW7CoAoKcm9vdEAg c2VydmljZSBuZXRpZiByZXN0YXJ0LS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0t LS0tLS0tLS0tLS0uLi5EZXN0cm95ZWQgd2xhbig0KSBpbnRlcmZhY2VzOiB3bGFuMC5pZmNvbmZp Zzogbm8gY2hhbm5lbHMgY2FsY3VsYXRlZFN0YXJ0aW5nIHdwYV9zdXBwbGljYW50Li9ldGMvcmMu ZC93cGFfc3VwcGxpY2FudDogV0FSTklORzogZmFpbGVkIHRvIHN0YXJ0IHdwYV9zdXBwbGljYW50 U3RhcnRpbmcgTmV0d29yazogbG8wIGVtMCB3bGFuMC4uLi4KCnJvb3QjIHdwYV9zdXBwbGljYW50 IC1pIHdsYW4wIC1jIC9ldGMvd3BhX3N1cHBsaWNhbnQuY29uZi0tLS0tLS0tLS0tLS0tLS0tLS0t LS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tU3VjY2Vzc2Z1bGx5IGluaXRpYWxpemVkIHdwYV9z dXBwbGljYW50aW9jdGxbU0lPQ1M4MDIxMSwgb3A9OTgsIGFyZ19sZW49MzJdOiBJbnZhbGlkIGFy Z3VtZW50ZmFpbGVkIHRvIElFRUU4MDIxMV9JT0NfREVWQ0FQUzogSW52YWxpZCBhcmd1bWVudHds YW4wOiBGYWlsZWQgdG8gaW5pdGlhbGl6ZSBkcml2ZXIgaW50ZXJmYWNlRUxPT1A6IHJlbWFpbmlu ZyBzb2NrZXQ6IHNvY2s9NCBlbG9vcF9kYXRhPTB4ODAxYzJmMDAwIHVzZXJfZGF0YT0weDgwMWMx ODAwMCBoYW5kbGVyPTB4NDI0YjMwCgpyb290IyBkbWVzZyAtYSB8IGdyZXAgLWkgaXdtLS0tLS0t LS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS1pd20wOiA8SW50ZWwoUikg RHVhbCBCYW5kIFdpcmVsZXNzIEFDIDgyNjU+IG1lbSAweGVjMTAwMDAwLTB4ZWMxMDFmZmYgYXQg ZGV2aWNlIDAuMCBvbiBwY2kyaXdtMDogaHcgcmV2IDB4MjMwLCBmdyB2ZXIgMjIuMzYxNDc2LjAs IGFkZHJlc3MgZjg6OTQ6YzI6MmQ6Nzg6YmUKCg== From owner-freebsd-wireless@freebsd.org Tue Dec 26 20:19:56 2017 Return-Path: Delivered-To: freebsd-wireless@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 1BFCEEACE1F for ; Tue, 26 Dec 2017 20:19:56 +0000 (UTC) (envelope-from kevinn4901@163.com) Received: from m13-90.163.com (m13-90.163.com [220.181.13.90]) by mx1.freebsd.org (Postfix) with ESMTP id 3F45C658E2 for ; Tue, 26 Dec 2017 20:19:54 +0000 (UTC) (envelope-from kevinn4901@163.com) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=Date:From:Subject:MIME-Version:Message-ID; bh=+YTnl 2TS7C5GaZ/2BoHVgVqU0MPCbEth2BPhB8yTaJk=; b=fuAICj+z8Z0gUxu3LlWS+ 5cKHz+kOJv7aIMNJTPCc6BXJ0861gSIu78D4y4WJnWB8HZR0qLHiw0KnY3VnK9ln azpJvaQ1o/DWsLDg9fTOuid7dALtx2tRmLCJhSnWP8Cx+GCU1OBGHH69grpdGfkX qjU3KQY1EzFnM+yIfctzPE= Received: from kevinn4901$163.com ( [115.196.118.23] ) by ajax-webmail-wmsvr90 (Coremail) ; Wed, 27 Dec 2017 04:04:27 +0800 (CST) X-Originating-IP: [115.196.118.23] Date: Wed, 27 Dec 2017 04:04:27 +0800 (CST) From: kv163 To: freebsd-wireless@freebsd.org Subject: problem: running iwm 8265 failed on CURRENT. X-Priority: 3 X-Mailer: Coremail Webmail Server Version SP_ntes V3.5 build 20160729(86883.8884) Copyright (c) 2002-2017 www.mailtech.cn 163com X-CM-CTRLDATA: dP0bUmZvb3Rlcl9odG09NTQ5MDo1Ng== MIME-Version: 1.0 Message-ID: <3ea42b84.278.160946d1f45.Coremail.kevinn4901@163.com> X-Coremail-Locale: zh_CN X-CM-TRANSID: WsGowACnr8NLq0JaY_4nAA--.62166W X-CM-SenderInfo: pnhyx0rquziii6rwjhhfrp/1tbiowu6+FUMC9WDXQAAsz X-Coremail-Antispam: 1U5529EdanIXcx71UUUUU7vcSsGvfC2KfnxnUU== Content-Type: text/plain; charset=GBK Content-Transfer-Encoding: base64 X-Content-Filtered-By: Mailman/MimeDel 2.1.25 X-BeenThere: freebsd-wireless@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: "Discussions of 802.11 stack, tools device driver development." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 26 Dec 2017 20:19:56 -0000 SGksCgoKSSd2ZSBpbnN0YWxsZWQgMTItQ1VSUkVOVCBvbiBhIFgxIGNhcmJvbiAyMDE3LCAgd2l0 aCBJbnRlbCBEdWFsIEJhbmQgV2lyZWxlc3MgQUMgODI2NSwgYnV0IGZhaWxlZCB3aGVuIHJ1bm5p bmcgd3BhX3N1cHBsaWNhbnQsCmhlcmUgYXJlIGZ1bGwgZGV0YWlsczoKCgpyb290IyBpZmNvbmZp ZyB3bGFuMAotLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLQp3 bGFuMDogZmxhZ3M9ODgwMjxCUk9BRENBU1QsU0lNUExFWCxNVUxUSUNBU1Q+IG1ldHJpYyAwIG10 dSAxNTAwCiAgICBldGhlciBmODo5NDpjMjoyZDo3ODpiZQogICAgaHdhZGRyIGY4Ojk0OmMyOjJk Ojc4OmJlCiAgICBuZDYgb3B0aW9ucz0yOTxQRVJGT1JNTlVELElGRElTQUJMRUQsQVVUT19MSU5L TE9DQUw+CiAgICBtZWRpYTogSUVFRSA4MDIuMTEgV2lyZWxlc3MgRXRoZXJuZXQgYXV0b3NlbGVj dCAoYXV0b3NlbGVjdCkKICAgIHN0YXR1czogbm8gY2FycmllcgogICAgc3NpZCAiIiBjaGFubmVs IDEgKDI0MTIgTUh6IDExYikKICAgIGF1dGhtb2RlIE9QRU4gcHJpdmFjeSBPRkYgdHhwb3dlciAw IGJtaXNzIDEwIHNjYW52YWxpZCA2MCB3bWUKICAgIGdyb3Vwczogd2xhbiAKCgoKCnJvb3RAIHNl cnZpY2UgbmV0aWYgcmVzdGFydAotLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0t LS0tLS0tLS0tLQouLi4KRGVzdHJveWVkIHdsYW4oNCkgaW50ZXJmYWNlczogd2xhbjAuCmlmY29u ZmlnOiBubyBjaGFubmVscyBjYWxjdWxhdGVkClN0YXJ0aW5nIHdwYV9zdXBwbGljYW50LgovZXRj L3JjLmQvd3BhX3N1cHBsaWNhbnQ6IFdBUk5JTkc6IGZhaWxlZCB0byBzdGFydCB3cGFfc3VwcGxp Y2FudApTdGFydGluZyBOZXR3b3JrOiBsbzAgZW0wIHdsYW4wLgouLi4KCgoKCnJvb3QjIHdwYV9z dXBwbGljYW50IC1pIHdsYW4wIC1jIC9ldGMvd3BhX3N1cHBsaWNhbnQuY29uZgotLS0tLS0tLS0t LS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLQpTdWNjZXNzZnVsbHkgaW5pdGlh bGl6ZWQgd3BhX3N1cHBsaWNhbnQKaW9jdGxbU0lPQ1M4MDIxMSwgb3A9OTgsIGFyZ19sZW49MzJd OiBJbnZhbGlkIGFyZ3VtZW50CmZhaWxlZCB0byBJRUVFODAyMTFfSU9DX0RFVkNBUFM6IEludmFs aWQgYXJndW1lbnQKd2xhbjA6IEZhaWxlZCB0byBpbml0aWFsaXplIGRyaXZlciBpbnRlcmZhY2UK RUxPT1A6IHJlbWFpbmluZyBzb2NrZXQ6IHNvY2s9NCBlbG9vcF9kYXRhPTB4ODAxYzJmMDAwIHVz ZXJfZGF0YT0weDgwMWMxODAwMCBoYW5kbGVyPTB4NDI0YjMwCgoKCgpyb290IyBkbWVzZyAtYSB8 IGdyZXAgLWkgaXdtCi0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0t LS0tCml3bTA6IDxJbnRlbChSKSBEdWFsIEJhbmQgV2lyZWxlc3MgQUMgODI2NT4gbWVtIDB4ZWMx MDAwMDAtMHhlYzEwMWZmZiBhdCBkZXZpY2UgMC4wIG9uIHBjaTIKaXdtMDogaHcgcmV2IDB4MjMw LCBmdyB2ZXIgMjIuMzYxNDc2LjAsIGFkZHJlc3MgZjg6OTQ6YzI6MmQ6Nzg6YmUKCg== From owner-freebsd-wireless@freebsd.org Wed Dec 27 04:05:49 2017 Return-Path: Delivered-To: freebsd-wireless@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 7F7B8EA06F4 for ; Wed, 27 Dec 2017 04:05:49 +0000 (UTC) (envelope-from khanzf@gmail.com) Received: from mail-yb0-x229.google.com (mail-yb0-x229.google.com [IPv6:2607:f8b0:4002:c09::229]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 34BB47622B; Wed, 27 Dec 2017 04:05:49 +0000 (UTC) (envelope-from khanzf@gmail.com) Received: by mail-yb0-x229.google.com with SMTP id w1so13515047ybe.10; Tue, 26 Dec 2017 20:05:49 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=1S5pl1GZWhstiQm9/w5pJU//+XqsZUWw6Oligy3o1tA=; b=IPnF7PR8aF1JOK+yB+gqOWwJsEoTke2Qc4M4FCFhoEgQDqzhGZEnQDD+D7as7nxcjy Owoj84LweIpYhSS3nOxBv3sm9ydj0eyU8DWAP2C9++6Xyjeb5/r2b9SiZ/I1CxZYaiQP 2f9iEFpwWJNxEK36+JKlrYIs9JlBl2TaaSbybjvwd6KdhJ/Av+hRmXJLEESPXXk/TXc6 G7wKILh3fsc/r3cLPeAlohqBojG/jMEKJfyBzIYa87qghTTdZELJipSul000/Nlr/R4I B3Kd0BWBPPxe7v5hKLPgq0g6yIGcqMpxhszpigPry/RZBufGpZNjBmbJy0N383mnObxr 7mQw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=1S5pl1GZWhstiQm9/w5pJU//+XqsZUWw6Oligy3o1tA=; b=SZsW5rXI3dp42YXOilByEIH7Y3nMVSfwaCTtwKTQrC51bfVTGrN/nUEodA/PpR3JtN MPzyx3ZgowEroTD32Sc3nASQcatu0L46tDtKlys2aF9laAquQYGJ3YUfY3gsAxvS2Fe5 NWiDSrcWzGB87D5DiBTpyX3dM2MNPsQypdwOdw3ioJtkoEU8IQUX5d38xHJMBrI/t/Ur lPgU8BeF2/o/mkfG5jp/2+iZz1D+P5BN3R0/jymBrYmnAH0PFuqb+BPfQnZI4IwS9AEG HtSTYrhM5Qv5I1ckm5myjrPCTWnZKqvxzhzGsmDX0h0RChVvtDMqSvMGG+I0lJ/uoAFE 54vg== X-Gm-Message-State: AKGB3mJkpnmldPtBVdhIGaXeqyIC28YOqWR7KpazjplqljmMfAYBPx5x oeOG4f6SAxX+tJAxVESkw4ABz+Zlxkiv23xhaWWMyg== X-Google-Smtp-Source: ACJfBos6/V3CmGdcKD3LZsSZog2lmptoe9zaAX5HADhBPSwQ7jXRYv8iOnwspmJOc5e8J0g3uZhjBBiy00SIRzvXIgo= X-Received: by 10.37.212.69 with SMTP id m66mr6295392ybf.158.1514347548027; Tue, 26 Dec 2017 20:05:48 -0800 (PST) MIME-Version: 1.0 Received: by 10.37.131.194 with HTTP; Tue, 26 Dec 2017 20:05:27 -0800 (PST) In-Reply-To: References: From: Farhan Khan Date: Tue, 26 Dec 2017 23:05:27 -0500 Message-ID: Subject: Re: rtwn(4) extension rtl8188ee receiving constantly interrupts To: Adrian Chadd Cc: "freebsd-wireless@freebsd.org" Content-Type: text/plain; charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.25 X-BeenThere: freebsd-wireless@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: "Discussions of 802.11 stack, tools device driver development." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 27 Dec 2017 04:05:49 -0000 Hi Adrian, > So, what do the bits in R88EE_HIMR mean? What about HIRME? Let's > figure out which it is. Unfortunately, I do not know what these values are regarding. My speculation is that R88EE_HIMR and HIMRE are how you notify the device to clear the interrupt. On the Linux source, they are both in a function called rtl88ee_disable_interrupt. The Linux documentation puts them in a struct called rtl_var_map and labels this section as"reg map". It is not clear to me what that means. It could be the C2H, but I commented out the FW loading code entirely, but this issue remains. I am going to re-review the initialization code. Perhaps the issue lays there. Its a challenge, because the Linux and FreeBSD structure of the code is not 1-to-1. -- Farhan Khan PGP Fingerprint: B28D 2726 E2BC A97E 3854 5ABE 9A9F 00BC D525 16EE On Sun, Dec 24, 2017 at 9:55 PM, Adrian Chadd wrote: > Hi, > > So it looks like the thing that's generating the interrupt isn't being > cleared. > > So, what do the bits in R88EE_HIMR mean? What about HIRME? Let's > figure out which it is. > > Also, is it something in C2H (the target to host event channel) that's > not being handled? > > > > -adrian > > > > On 21 December 2017 at 14:43, Farhan Khan wrote: > > Hi, > > > > As I wrote a few weeks back, I am working on the extension to rtwn(4) to > add > > RTL8188EE support. At the moment, I am working on the Rx code, which > handles > > interrupts. After the interrupt is triggered, the code goes into the Rx > routine > > and delivers "junk data" in a continuous loop. It seems that the > interrupt code > > is **constantly** called - enough that the load average is frequently > above 1.0. > > > > I suspect the issue is giving the WiFi driver an acknowledgement of some > sort, > > but I am not certain. I attempted to copy Linux's interrupt code as best > as > > possible, but cannot determine if the error is within my code. > > > > Here is a verbose explanation of what I believe Linux is doing and what > I am > > doing on FreeBSD. > > > > -----Linux code works as follows----- > > > > 1. The IRQ trigger calls the function _rtl_pci_interrupt > > (drivers/net/wireless/realtek/rtlwifi/pci.c) > > 2. This calls disable_interrupt, which for rtl8188ee is > > rtl88ee_disable_interrupt. This function writes IMR_DISABLED (0x0) to > > REG_HIMR (0xb0) and REG_HIMRE (0xb8). > > 3. Next _rtl_pci_interrupt calls interrupt_recognized(), a function > pointer to > > rtl88ee_interrupt_recognized(), which: > > * Reads from REG_HISR (0xb4), stores the value in 'inta', ANDs that > value by > > 0x200084ff, then writes that value back to the same register. > > * Reads from REG_HISRE (0xbc), stores the value in 'intb', ANDs that > value by > > 0x100, then writes that value back to the same register. > > Then the function returns returns. > > > > 4. Back in _rtl_pci_interrupt if 'inta' is 0 and 'intb' is 0xffff, the > code will > > skip step 5, goto to "done" and execute enable_interrupt code > > (rtl88ee_enable_interrupt) > > > > 5. If bit(0) is set to 1, this is an Rx interrupt and will run > > _rtl_pci_rx_interrupt(). From my review of the code, from here the > Linux > > driver will read from the DMA memory and send the frame to the > ieee80211 > > layer. I only found 1 additional read instruction related to the > power value, > > but nothing else is changed. > > > > 6. Here is the "done" portion, that happens no matter what, but is > jumped to > > immediately as referenced above. It will call enable_interrupt(), a > function > > pointer to rtl88ee_enable_Interrupt(), which will: > > a. Write 0x200084ff to REG_HIMR (0xb0) > > b. Write 0x100 to REG_HIMRE (0xb8) > > c. Write 0 to to REG_C2HEVT_CLEAR (0x01AF, A register having to do > with C2H > > firmware) > > d. Write 0xc0 to REG_HSIMR (0x58 , I know this value from printf'ing > it) > > > > This is what I identified from reviewing from the Linux code. > > > > -----My FreeBSD Code----- > > > > My code is located here: > > https://github.com/khanzf/freebsd/tree/rx_not_working/sys/dev/rtwn/. > > > > 1. The IRQ trigger calls the function rtwn_pci_intr() > > (sys/dev/rtwn/pci/rtwn_pci_rx.c) > > 2. The equivalent of Linux's line 2 and 3 is in rtwn_classify_intr, > which is a > > pointer to r88ee_enable_intr located in sys/dev/rtwn/rtl8188e/pci/r88e > e_rx. > > This write's 0x0 to REG_HIMR (0xb0) and REG_HIMRE (0xb8) > > 3. Continuing, the same function: > > * Reads from ISR_MINE (same as REG_HISR, 0xb4), ANDs the value by > 0x200084ff, > > store it in 'status'. Then I write the value back to the same > register. > > * Read from REG_HISRE (0xbc), AND the value by 0x100, store it in > 'statusb'. > > Write this value back to the same register. > > * Since this is an Rx register, the 'ret' value is AND'd by > RTWN_PCI_INTR_RX. > > > > 4. In the Linux code, if 'status' is 0x0 and 'statusb' is 0xFFFF, it > will goto > > to "done". On FreeBSD, it simply does not set any bits on the 'ret' > value and > > the function returns 0, going back to rtwn_pci_intr. > > > > 5. Returning to rtwn_pci_intr(), if the 'ret' (now 'status') has > > RTWN_PCI_INTR_RX flag on, it executes rtwn_pci_tx_done(), which will > read the > > DMA memory and send the frame to the ieee80211 layer. The execution > will skip > > step 5 if 'ret' was 0 (the RTWN_PCI_INTR_RX flag was never set). This > returns > > execution back to rtwn_pci_intr(). > > > > 6. rtwn_pci_intr() concludes by running rtwn_pci_enable_intr(). This is > similar > > to Linux's enable_interrupt(), it does the following: > > a. Write 0x200084f to R88EE_HIMR (0xb0) > > b. Write 0x100 to R88EE_HIMRE (0xb8) > > c. Write 0x0 to REG_C2HEVT_CLEAR (0x01AF) > > d. Write 0xc0 to REG_HSIMR > > > > --------- > > > > To me, it appears that I did a complete 1-to-1 copy of the Linux code. > However, > > in my case the driver is receiving constant interrupts without stopping. > I am > > not certain what I am missing or what is different. Could it be that > something > > outside of this particular code path was not properly set. If so, what > might > > that be? > > > > Please advise. > > Thank you, > > > > -- > > Farhan Khan > > PGP Fingerprint: B28D 2726 E2BC A97E 3854 5ABE 9A9F 00BC D525 16EE > > _______________________________________________ > > freebsd-wireless@freebsd.org mailing list > > https://lists.freebsd.org/mailman/listinfo/freebsd-wireless > > To unsubscribe, send any mail to "freebsd-wireless-unsubscribe@ > freebsd.org" >