From owner-freebsd-current@freebsd.org Thu Nov 2 16:53:13 2017 Return-Path: Delivered-To: freebsd-current@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 98E83E5E791 for ; Thu, 2 Nov 2017 16:53:13 +0000 (UTC) (envelope-from adrian.chadd@gmail.com) Received: from mail-wm0-x22c.google.com (mail-wm0-x22c.google.com [IPv6:2a00:1450:400c:c09::22c]) (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 2AE69EEA for ; Thu, 2 Nov 2017 16:53:13 +0000 (UTC) (envelope-from adrian.chadd@gmail.com) Received: by mail-wm0-x22c.google.com with SMTP id r68so259034wmr.3 for ; Thu, 02 Nov 2017 09:53:13 -0700 (PDT) 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=ynK+oU5vLYWAHy5+AIo8Zb02HxncUq3qkQbmN8dXcqM=; b=ghoLvAENUFeHz8k5K6j4UcNVS9MIC45QGlQOIwlmcBF6XVoD7cJwj8+AEY/1gtaPYf 0oBmAC2YL29k0lHf45Z6TBO+YzoQkwtoa02BnxEQU4xA+XsVGnMzQ4Eovf1AFRL3pTQj Pe6TUBvTEVfgE4gG/fG0EA4TJsqHXI21yBgFBL6fhSY6v8YfjSDxrOa38ACt40LTj98e 9Nf9Hhpk99xYyyFOtFAskqQrqvQh5Ek34jAyknlqY2wXXCEOCRX4ECtM7xqY4aUgynH3 NTe0I3a6pDtHWGZOZLql/9yri4A+cfs3uz3I90/bCdWAYpMElHUWCniAjjebRR3YRNoN 7FbA== 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=ynK+oU5vLYWAHy5+AIo8Zb02HxncUq3qkQbmN8dXcqM=; b=Tbeq+7qvn0BRbv6946rNKIvk8wFBW3C4PHWr4fMU2zqeZpuDymSXdSMOv6bNNfvXed lk3a26TTrjRHWVGo7SGjmX0X1SgIB0+zfDPWShA+7SOURG7Z+Vy3cKR7LsDFrLRxXKSe i6KHhefi27Trjyveh9Rcbp6zAWH9F0FXe7WfzX0djYzbotcqacQsa4e7rzMOcsGqHi8x kknOHh1DkBmxN+m7zWyT0DgEnk2Lbl6eHIrgoVN4gKAGeCPsSGsXZnI6wCshm3yEZ3JE uxeLOhJHwq7XcrHXf5YI75kyd4qsRjwvDL97XYjnvuxK+GpBbaMpbaB1LadyGIwzFZZE RMAg== X-Gm-Message-State: AMCzsaX4Zqi6UnPnGHo1u6yqBaS4F8ZzqzqG+uuUQS0soBvQ1/WJRKyL CbAhrvsvltsXGwXK81HjdA9HQJHdiua/0+fC1kg= X-Google-Smtp-Source: ABhQp+TJS44NXNSBRkSAZTSFLv89Y30mA+AJ22elCzUAb9hGasPqOw/9AnjEMJgZlTAWPfPHe/J+dprIBN38wWdgwrI= X-Received: by 10.28.175.73 with SMTP id y70mr2472777wme.21.1509641590901; Thu, 02 Nov 2017 09:53:10 -0700 (PDT) MIME-Version: 1.0 Received: by 10.28.46.209 with HTTP; Thu, 2 Nov 2017 09:53:09 -0700 (PDT) In-Reply-To: References: <20171029010942.GD5682@gmail.com> <1282E750-97FF-43A7-BFEE-3B82597311F0@gmail.com> <59f5a3e3.82b6df0a.9f209.0495SMTPIN_ADDED_MISSING@mx.google.com> <5BE53074-F3E7-4392-A48A-E01474A9AFAE@gmail.com> From: Adrian Chadd Date: Thu, 2 Nov 2017 09:53:09 -0700 Message-ID: Subject: Re: iwm not in GENERIC kernel To: Ngie Cooper Cc: Warner Losh , Kevin Oberman , Thomas Mueller , FreeBSD Current Content-Type: text/plain; charset="UTF-8" X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 02 Nov 2017 16:53:13 -0000 uuuuugh okay So it's a chicken/egg problem. You can't finish the device probe/attach until the firmware loads. For iwn, you can read the chipset abilities and mac address from EPROM/flash on the chip without the firmware being loaded, so you can complete probe/attach before the root filesystem is mounted. For iwm, you have to load the firmware before you can read the chipset abilities and MAC address so you can't complete probe/attach until AFTER the root filesystem is mounted. If someone wants to go add all of that support in to have probe/attach deferred until after rootfs is available then please do so. Or, just support the firmware being 100% compiled in- but when I tried this the last time I ran out of some firmware arena size preventing other firmware for other chipsets from being loaded. Otherwise this is the current hack. :) Sorry! -adrian