From owner-freebsd-hackers@freebsd.org Wed Aug 26 05:19:18 2020 Return-Path: Delivered-To: freebsd-hackers@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 3CD313C947D for ; Wed, 26 Aug 2020 05:19:18 +0000 (UTC) (envelope-from zbeeble@gmail.com) Received: from mail-ed1-x52a.google.com (mail-ed1-x52a.google.com [IPv6:2a00:1450:4864:20::52a]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1O1" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4BbvKx3dp6z4gRS for ; Wed, 26 Aug 2020 05:19:17 +0000 (UTC) (envelope-from zbeeble@gmail.com) Received: by mail-ed1-x52a.google.com with SMTP id di22so561795edb.12 for ; Tue, 25 Aug 2020 22:19:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=rYrWCEfN4ZgXNAt32l7cpj5IJGTXaPZKlBypSyWuquY=; b=KRujYrdeolV/PlNBgWM6OfkIMX/ZOc5ASqufLcEV5EcwLYjalU28tAkJt5uQ+8rFul /gES5QSZ5lDX4saAB3o6ctfPcb7UyI7adWxwTgaja4p4TFGs1FgYi20jCm15WufHYyae r0c+5/pX70Jdnji7G54/Kt57RAa6iSk+cH5ckN3A4rNf65/NzWf3KOWbPPdEtguYsTPQ 9xvBpjtVJVyeM57sOUARaUVWtJcosN7M5rA7DyoPnbsKyfiOokiFJHIW7byULDDqDD0o mlTYGR2BKvSqK1Efs73kn4tJaCSsBw+ccwd0tR3P81vu4aEj6YUZPcu8vUNHO7QPfEYn 6Z0w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=rYrWCEfN4ZgXNAt32l7cpj5IJGTXaPZKlBypSyWuquY=; b=q+/XiPMCIc+uAHhde3fuiprK0PPM8OHqFLxRWesa3dr6Bd3A8HgieXEGUstoOO7fSu LuMylZtkQ/mS/iapTe5/7mybNnnGD55gwlydcfEc+eHgU4QoQIkxeC8bSD57HSzRb6y3 DHgkaV8osqiNe/mXYR5PDDrxi7u8bhxks4gBCeZ/Jh1L6Vp2Bp2Jthkdw3sh1v15n1YX 9FLNrBLVUxVwoGFnDLpdzFjcveNa2RtPObIKNovOkqeQXer44bUXWq7fLr8h3d5W+gBj 2NaWrODQR93+JuFsi9ovpTzmAy/Jx7VsdDbuJMuaNanolgZSLekxsSIvZ9BBFtxraSLh 79FA== X-Gm-Message-State: AOAM5302HDnZnQnTvlBq85RjacRSTt38zEJ+aeUA1y56A0D6ftYsO6rp WPYpuTDa0d0MYjQyrz5U6B1Pk4wNFifJbc2TESpjfbZaew== X-Google-Smtp-Source: ABdhPJxfjm3Po8rcTMA+NMeCfuO2sROp8xtOY2f+m7EiCzbMC4YykWz+FVOiTvIEhss6Udhto5Y8s2h4WVDehpiAORs= X-Received: by 2002:aa7:d955:: with SMTP id l21mr13748296eds.343.1598419155881; Tue, 25 Aug 2020 22:19:15 -0700 (PDT) MIME-Version: 1.0 From: Zaphod Beeblebrox Date: Wed, 26 Aug 2020 01:19:03 -0400 Message-ID: Subject: Is this expected to work? Really? (test of abstraction levels). To: FreeBSD Hackers X-Rspamd-Queue-Id: 4BbvKx3dp6z4gRS X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20161025 header.b=KRujYrde; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (mx1.freebsd.org: domain of zbeeble@gmail.com designates 2a00:1450:4864:20::52a as permitted sender) smtp.mailfrom=zbeeble@gmail.com X-Spamd-Result: default: False [-2.60 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-0.51)[-0.507]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20161025]; RCVD_TLS_ALL(0.00)[]; FROM_HAS_DN(0.00)[]; DWL_DNSWL_NONE(0.00)[gmail.com:dkim]; R_SPF_ALLOW(-0.20)[+ip6:2a00:1450:4000::/36:c]; FREEMAIL_FROM(0.00)[gmail.com]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-hackers@freebsd.org]; NEURAL_HAM_LONG(-0.86)[-0.857]; RCPT_COUNT_ONE(0.00)[1]; TO_DN_ALL(0.00)[]; DKIM_TRACE(0.00)[gmail.com:+]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; RCVD_IN_DNSWL_NONE(0.00)[2a00:1450:4864:20::52a:from]; NEURAL_HAM_SHORT(-0.24)[-0.238]; TO_MATCH_ENVRCPT_ALL(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+,1:+,2:~]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:15169, ipnet:2a00:1450::/32, country:US]; RCVD_COUNT_TWO(0.00)[2]; MAILMAN_DEST(0.00)[freebsd-hackers]; SUBJECT_HAS_QUESTION(0.00)[] Content-Type: text/plain; charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.33 X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 26 Aug 2020 05:19:18 -0000 So... here's the product: https://www.ebay.ca/itm/PCI-Express-PCI-e-to-PCI-Adapter-Card-PCIe-to-Dual-PCI-Expansion-Card-USB-3-0/383647797022?hash=item595330cf1e:g:O~kAAOSw0kxfGdIM For those who don't want to click, we have PCIe 1x -->> usb3.0 -->> PCI 32bit/66. Is that likely to work? Is our abstraction of busses that powerful? If I plug, say, a PCI I/O controller with a floppy on it ... would that be detected? If not, is it a somewhat simple hack to make it work?