From owner-freebsd-hackers@freebsd.org Tue Apr 25 05:03:17 2017 Return-Path: Delivered-To: freebsd-hackers@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 00A8BD4F633 for ; Tue, 25 Apr 2017 05:03:17 +0000 (UTC) (envelope-from markmi@dsl-only.net) Received: from asp.reflexion.net (outbound-mail-210-25.reflexion.net [208.70.210.25]) (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 A8DE910C6 for ; Tue, 25 Apr 2017 05:03:16 +0000 (UTC) (envelope-from markmi@dsl-only.net) Received: (qmail 17451 invoked from network); 25 Apr 2017 05:03:15 -0000 Received: from unknown (HELO mail-cs-01.app.dca.reflexion.local) (10.81.19.1) by 0 (rfx-qmail) with SMTP; 25 Apr 2017 05:03:15 -0000 Received: by mail-cs-01.app.dca.reflexion.local (Reflexion email security v8.40.0) with SMTP; Tue, 25 Apr 2017 01:03:15 -0400 (EDT) Received: (qmail 8912 invoked from network); 25 Apr 2017 05:03:14 -0000 Received: from unknown (HELO iron2.pdx.net) (69.64.224.71) by 0 (rfx-qmail) with (AES256-SHA encrypted) SMTP; 25 Apr 2017 05:03:14 -0000 Received: from [192.168.1.106] (c-76-115-7-162.hsd1.or.comcast.net [76.115.7.162]) by iron2.pdx.net (Postfix) with ESMTPSA id 428DFEC88E9; Mon, 24 Apr 2017 22:03:14 -0700 (PDT) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 10.3 \(3273\)) Subject: Re: head -r317015 (and before) vs. Pine64+ 2GB (an aarch64) and spurious interrupts: [the A64 IRQ numbers involved other than 1023] From: Mark Millard In-Reply-To: Date: Mon, 24 Apr 2017 22:03:13 -0700 Cc: Tom Vijlbrief Content-Transfer-Encoding: 7bit Message-Id: <49C0BC5D-8A31-4E77-AFC6-6F027CA3AB1E@dsl-only.net> References: To: freebsd-arm , freebsd-hackers@freebsd.org X-Mailer: Apple Mail (2.3273) X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 25 Apr 2017 05:03:17 -0000 I found some basic reference material for the "last irq" numbers for the A64 that is in the Pine64+ 2GB (and 1GB). . . IRQ 27: PPI 11 interrupt, vector 0x006C (I've no clue about this one beyond it being a "Private Peripheral Interrupt" example, somehow specific to each core separately.) The rest of the IRQs are "Shared Peripheral Interrupt"s. . . IRQ 92: SD/MMC Host Controller 0 interrupt, vector 0x0170 IRQ 106: USB-EHCI0 interrupt, vector 0x01A8 There were some: IRQ 114: EMAC interrupt, vector 0x01C8 IRQ 32: UART 0 interrupt, vector 0x0080 And the first "last irq:" for each boot was one of: IRQ 107: USB-OHCIO interrupt, vector 0x0A1C IRQ 64: External Non-Mask Interrupt, vector 0x0100 Neither 107 or 64 occurred again after the first message for a boot. 64 showed up when no USB device was plugged in; 107 showed when one was left plugged in (plugged in before powering on the Pine64+ 2GB). 1023 for the current irq number is special and not specific to the A64. So far I can not tell if the kernel mishandles the A64 in some way that leads to 1023's vs. if this is just what an A64 does for some odd reason, even with fully-correct software. === Mark Millard markmi at dsl-only.net