From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e23smtp03.au.ibm.com (e23smtp03.au.ibm.com [202.81.31.145]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "e23smtp03.au.ibm.com", Issuer "GeoTrust SSL CA" (not verified)) by ozlabs.org (Postfix) with ESMTPS id 615382C008F for ; Tue, 15 Jan 2013 18:39:08 +1100 (EST) Received: from /spool/local by e23smtp03.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Tue, 15 Jan 2013 17:34:06 +1000 Received: from d23relay03.au.ibm.com (d23relay03.au.ibm.com [9.190.235.21]) by d23dlp01.au.ibm.com (Postfix) with ESMTP id 299022CE804A for ; Tue, 15 Jan 2013 18:39:00 +1100 (EST) Received: from d23av01.au.ibm.com (d23av01.au.ibm.com [9.190.234.96]) by d23relay03.au.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id r0F7cxBL48758962 for ; Tue, 15 Jan 2013 18:38:59 +1100 Received: from d23av01.au.ibm.com (loopback [127.0.0.1]) by d23av01.au.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id r0F7cwXq031200 for ; Tue, 15 Jan 2013 18:38:59 +1100 From: Mike Qiu To: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Subject: [PATCH 0/3] Enable multiple MSI feature in pSeries Date: Tue, 15 Jan 2013 15:38:53 +0800 Message-Id: <1358235536-32741-1-git-send-email-qiudayu@linux.vnet.ibm.com> Cc: tglx@linutronix.de, Mike Qiu List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Currently, multiple MSI feature hasn't been enabled in pSeries, These patches try to enbale this feature. These patches have been tested by using ipr driver, and the driver patch has been made by Wen Xiong : [PATCH 0/7] Add support for new IBM SAS controllers Test platform: One partition of pSeries with one cpu core(4 SMTs) and RAID bus controller: IBM PCI-E IPR SAS Adapter (ASIC) in POWER7 OS version: SUSE Linux Enterprise Server 11 SP2 (ppc64) with 3.8-rc3 kernel IRQ 21 and 22 are assigned to the ipr device which support 2 mutiple MSI. The test results is shown by 'cat /proc/interrups': CPU0 CPU1 CPU2 CPU3 16: 240458 261601 226310 200425 XICS Level IPI 17: 0 0 0 0 XICS Level RAS_EPOW 18: 10 0 3 2 XICS Level hvc_console 19: 122182 28481 28527 28864 XICS Level ibmvscsi 20: 506 7388226 108 118 XICS Level eth0 21: 6 5 5 5 XICS Level host1-0 22: 817 814 816 813 XICS Level host1-1 LOC: 398077 316725 231882 203049 Local timer interrupts SPU: 1659 919 961 903 Spurious interrupts CNT: 0 0 0 0 Performance monitoring interrupts MCE: 0 0 0 0 Machine check exceptions Mike Qiu (3): irq: Set multiple MSI descriptor data for multiple IRQs irq: Add hw continuous IRQs map to virtual continuous IRQs support powerpc/pci: Enable pSeries multiple MSI feature arch/powerpc/kernel/msi.c | 4 -- arch/powerpc/platforms/pseries/msi.c | 62 ++++++++++++++++++++++++++++++++- include/linux/irq.h | 4 ++ include/linux/irqdomain.h | 3 ++ kernel/irq/chip.c | 40 ++++++++++++++++----- kernel/irq/irqdomain.c | 61 +++++++++++++++++++++++++++++++++ 6 files changed, 158 insertions(+), 16 deletions(-) -- 1.7.7.6