From owner-freebsd-arm@freebsd.org Thu Aug 27 14:02:00 2020 Return-Path: Delivered-To: freebsd-arm@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 67D213B37CB for ; Thu, 27 Aug 2020 14:02:00 +0000 (UTC) (envelope-from kamalpr@gmail.com) Received: from mail-io1-xd42.google.com (mail-io1-xd42.google.com [IPv6:2607:f8b0:4864:20::d42]) (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 4Bcktb6pZzz3RWc for ; Thu, 27 Aug 2020 14:01:59 +0000 (UTC) (envelope-from kamalpr@gmail.com) Received: by mail-io1-xd42.google.com with SMTP id g14so5937028iom.0 for ; Thu, 27 Aug 2020 07:01:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:reply-to:from:date:message-id :subject:to:cc; bh=tawpsBM5Bl6Z4VWeAq/2gLwAlxtnBJl/mGVaXxKpjlk=; b=trYj1w5OaFp32B9RKq08vesiOdnU5gFmzmtj8qZG46LCxR/C9+SIY6745JPti2OXWx WF36CNNR7STuawD2IJ+2EFAPRLcwEG6CeR/LPvbn3f1XB3Hj+w5uMpvPxX5uFLpyIcFs FGu8stekq5NnYET9vNRFZ3YSFn0BUDVu/cM98xPMhVqhk3lEbrIq+RK7xudMofUMJQre 1332cu52MJ4NRiR/fyvnYhZzjCOSXXyA+pNk2EDO3so3Bt42EvNDi/Z49hMokKOn2izz 31OdzzG9pL3UFFMYq+Lcm2wA6DRL2SOqYiu/nG+9np8/+wEBPKJF47lFK0Elt0JSt47u jF8A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:reply-to :from:date:message-id:subject:to:cc; bh=tawpsBM5Bl6Z4VWeAq/2gLwAlxtnBJl/mGVaXxKpjlk=; b=Gh0lfQinxUmsUDfgizG6yWtSMp4Ti2vmEtTe1o86o5SVXnkobJwJaB8UhU3pjqIL1i NQ6d2eenQr+ByqfXuFxLKM4V5VMajKyAvCbEQ2Rn55ti7rhteMZ5UmP7mNvc8+Irw/98 Xs02n2xNQUsgiVPUPEk3p7Vq43UbXrosbEXn7fwh+gVUiTTUNWAEhU/OcDb8EehSNnIz S3CZS1Ipv4RtvxbqS5QqyVXxFRMtrBhtgu3/ofPR0ZPNoqNs7UK0RKFx8bnSK7qu3U4Q l8bxBGUHzj8Qpwv5EMkTg+ifb9lCO/cOXZaNZFMsDdkoWuMbWxiLOWmKEw+J25FysuUp z8cg== X-Gm-Message-State: AOAM530UhepH+aOCABZJU68EBAFC5VxigCCnVe6b9DDXlrrs7LEb+xOH c1ZfU8e5DbdBvd0jQkpRFmkmyT9KPvjeSkB8ew== X-Google-Smtp-Source: ABdhPJxWhnaggC5HSFravP5EHnb1ARW5J0NT3d7VAfbhyufoxR7DzS94WR2KjMMkPjAl0aWIWBLCMfhejykvZ56P9mc= X-Received: by 2002:a5e:8f06:: with SMTP id c6mr16922870iok.119.1598536918968; Thu, 27 Aug 2020 07:01:58 -0700 (PDT) MIME-Version: 1.0 References: <7ed79c1d-2d66-5011-286f-8dcac058f7d5@selasky.org> In-Reply-To: <7ed79c1d-2d66-5011-286f-8dcac058f7d5@selasky.org> Reply-To: kamalp@acm.org From: "Kamal R. Prasad" Date: Thu, 27 Aug 2020 19:31:48 +0530 Message-ID: Subject: Re: INTR_FAST To: Hans Petter Selasky Cc: kamalp@acm.org, freebsd-arm@freebsd.org X-Rspamd-Queue-Id: 4Bcktb6pZzz3RWc X-Spamd-Bar: - Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20161025 header.b=trYj1w5O; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (mx1.freebsd.org: domain of kamalpr@gmail.com designates 2607:f8b0:4864:20::d42 as permitted sender) smtp.mailfrom=kamalpr@gmail.com X-Spamd-Result: default: False [-1.81 / 15.00]; HAS_REPLYTO(0.00)[kamalp@acm.org]; TO_DN_SOME(0.00)[]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36:c]; FREEMAIL_FROM(0.00)[gmail.com]; DKIM_TRACE(0.00)[gmail.com:+]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; SUBJ_ALL_CAPS(0.68)[9]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+,1:+,2:~]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; DWL_DNSWL_NONE(0.00)[gmail.com:dkim]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.03)[-1.029]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20161025]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; NEURAL_SPAM_SHORT(0.49)[0.492]; NEURAL_HAM_LONG(-0.95)[-0.949]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; REPLYTO_DOM_NEQ_FROM_DOM(0.00)[]; PREVIOUSLY_DELIVERED(0.00)[freebsd-arm@freebsd.org]; TO_MATCH_ENVRCPT_SOME(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[2607:f8b0:4864:20::d42:from]; RCVD_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[]; MAILMAN_DEST(0.00)[freebsd-arm] Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.33 X-BeenThere: freebsd-arm@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: "Porting FreeBSD to ARM processors." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 27 Aug 2020 14:02:00 -0000 ok i got the answer from the man page https://www.freebsd.org/cgi/man.cgi?query=3Dbus_setup_intr&apropos=3D0&sekt= ion=3D0&manpath=3DFreeBSD+8.1-RELEASE&format=3Dhtml is it common practice to move clock and serial io interrupt handlers to the filter handler? thanks -kamal On Thu, Aug 27, 2020 at 7:23 PM Hans Petter Selasky wrote= : > On 2020-08-27 15:50, Kamal R. Prasad wrote: > > "These interrupt handlers are currently misnamed =E2=80=9Cfast=E2=80=9D= interrupt > handlers > > since the INTR_FAST flag used in earlier versions of the kernel is used > to > > mark these handlers. The only interrupts which currently use these type= s > of > > interrupt handlers are clock interrupts and serial I/O device > interrupts." > > > > I want to use INTR_FAST for my spi controller, but i find that it is no= t > > defined on freebsd stable11. Is INTR_EXCL related in any way to > INTR_FAST? > > if not, how do I setup a fast interrupt handler? > > Hi, > > When you setup and interrupt, there are two function pointers. > > One is the so-called interrupt filter, which is running in the fast > context, and the other is the regular interrupt handler which is running > from a thread context. > > --HPS > _______________________________________________ > freebsd-arm@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-arm > To unsubscribe, send any mail to "freebsd-arm-unsubscribe@freebsd.org" >