From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932375Ab1GMDHn (ORCPT ); Tue, 12 Jul 2011 23:07:43 -0400 Received: from hera.kernel.org ([140.211.167.34]:44096 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932349Ab1GMDHl (ORCPT ); Tue, 12 Jul 2011 23:07:41 -0400 Date: Wed, 13 Jul 2011 03:07:29 GMT From: tip-bot for Naga Chumbalkar Message-ID: Cc: linux-kernel@vger.kernel.org, hpa@zytor.com, mingo@redhat.com, nagananda.chumbalkar@hp.com, tglx@linutronix.de, hpa@linux.intel.com Reply-To: mingo@redhat.com, hpa@zytor.com, linux-kernel@vger.kernel.org, nagananda.chumbalkar@hp.com, tglx@linutronix.de, hpa@linux.intel.com In-Reply-To: <20110712211704.2939.71291.sendpatchset@nchumbalkar.americas.cpqcorp.net> References: <20110712211704.2939.71291.sendpatchset@nchumbalkar.americas.cpqcorp.net> To: linux-tip-commits@vger.kernel.org Subject: [tip:x86/apic] x86, ioapic: Print IRTE when IR is enabled Git-Commit-ID: 3040db92ee1b6c5b6b6d73f8cdcad54c0da11563 X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.3 (hera.kernel.org [127.0.0.1]); Wed, 13 Jul 2011 03:07:34 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 3040db92ee1b6c5b6b6d73f8cdcad54c0da11563 Gitweb: http://git.kernel.org/tip/3040db92ee1b6c5b6b6d73f8cdcad54c0da11563 Author: Naga Chumbalkar AuthorDate: Tue, 12 Jul 2011 21:17:41 +0000 Committer: H. Peter Anvin CommitDate: Tue, 12 Jul 2011 14:34:00 -0700 x86, ioapic: Print IRTE when IR is enabled When "apic=debug" is used as a boot parameter, Linux prints the IOAPIC routing entries in "dmesg". Below is output from IOAPIC whose apic_id is 8: # dmesg | grep "routing entry" IOAPIC[8]: Set routing entry (8-1 -> 0x31 -> IRQ 1 Mode:0 Active:0 Dest:0) IOAPIC[8]: Set routing entry (8-2 -> 0x30 -> IRQ 0 Mode:0 Active:0 Dest:0) IOAPIC[8]: Set routing entry (8-3 -> 0x33 -> IRQ 3 Mode:0 Active:0 Dest:0) ... Similarly, when IR (interrupt remapping) is enabled, and the IRTE (interrupt remapping table entry) is set up we should display it. After the fix: # dmesg | grep IRTE IOAPIC[8]: Set IRTE entry (P:1 FPD:0 Dst_Mode:0 Redir_hint:1 Trig_Mode:0 Dlvry_Mode:0 Avail:0 Vector:31 Dest:00000000 SID:00F1 SQ:0 SVT:1) IOAPIC[8]: Set IRTE entry (P:1 FPD:0 Dst_Mode:0 Redir_hint:1 Trig_Mode:0 Dlvry_Mode:0 Avail:0 Vector:30 Dest:00000000 SID:00F1 SQ:0 SVT:1) IOAPIC[8]: Set IRTE entry (P:1 FPD:0 Dst_Mode:0 Redir_hint:1 Trig_Mode:0 Dlvry_Mode:0 Avail:0 Vector:33 Dest:00000000 SID:00F1 SQ:0 SVT:1) ... The IRTE is defined in Sec 9.5 of the Intel VT-d Specification. Signed-off-by: Naga Chumbalkar Link: http://lkml.kernel.org/r/20110712211704.2939.71291.sendpatchset@nchumbalkar.americas.cpqcorp.net Signed-off-by: H. Peter Anvin --- arch/x86/kernel/apic/io_apic.c | 10 ++++++++++ 1 files changed, 10 insertions(+), 0 deletions(-) diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 5cba200..1ed5cbb 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -1295,6 +1295,16 @@ static int setup_ioapic_entry(int apic_id, int irq, * irq handler will do the explicit EOI to the io-apic. */ ir_entry->vector = pin; + + apic_printk(APIC_VERBOSE, KERN_DEBUG "IOAPIC[%d]: " + "Set IRTE entry (P:%d FPD:%d Dst_Mode:%d " + "Redir_hint:%d Trig_Mode:%d Dlvry_Mode:%X " + "Avail:%X Vector:%02X Dest:%08X " + "SID:%04X SQ:%X SVT:%X)\n", + apic_id, irte.present, irte.fpd, irte.dst_mode, + irte.redir_hint, irte.trigger_mode, irte.dlvry_mode, + irte.avail, irte.vector, irte.dest_id, + irte.sid, irte.sq, irte.svt); } else { entry->delivery_mode = apic->irq_delivery_mode; entry->dest_mode = apic->irq_dest_mode;