From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ozlabs.org (ozlabs.org [IPv6:2401:3900:2:1::2]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3sZMHR4T7lzDsW3 for ; Thu, 15 Sep 2016 12:07:15 +1000 (AEST) Received: from mx0a-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3sZMHQ6y5kz9t0p for ; Thu, 15 Sep 2016 12:07:14 +1000 (AEST) Received: from pps.filterd (m0098421.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.17/8.16.0.17) with SMTP id u8F23J5Y083672 for ; Wed, 14 Sep 2016 22:07:13 -0400 Received: from e23smtp02.au.ibm.com (e23smtp02.au.ibm.com [202.81.31.144]) by mx0a-001b2d01.pphosted.com with ESMTP id 25ewqam1h5-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Wed, 14 Sep 2016 22:07:12 -0400 Received: from localhost by e23smtp02.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Thu, 15 Sep 2016 12:07:09 +1000 Received: from d23relay09.au.ibm.com (d23relay09.au.ibm.com [9.185.63.181]) by d23dlp02.au.ibm.com (Postfix) with ESMTP id 3D6FB2BB0054 for ; Thu, 15 Sep 2016 12:07:07 +1000 (EST) Received: from d23av01.au.ibm.com (d23av01.au.ibm.com [9.190.234.96]) by d23relay09.au.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u8F277Bc2425174 for ; Thu, 15 Sep 2016 12:07:07 +1000 Received: from d23av01.au.ibm.com (localhost [127.0.0.1]) by d23av01.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id u8F276U3024587 for ; Thu, 15 Sep 2016 12:07:07 +1000 From: Gavin Shan To: linuxppc-dev@ozlabs.org Cc: mpe@ellerman.id.au, Gavin Shan Subject: [PATCH 0/4] powerpc/powernv: PCI Surprise Hotplug Support Date: Thu, 15 Sep 2016 12:07:18 +1000 Message-Id: <1473905242-898-1-git-send-email-gwshan@linux.vnet.ibm.com> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , This series of patches supports PCI surprise hotplug on PowerNV platform. * This newly added functionality depends on skiboot's changes. However, the functionality is disabled simply when skiboot doesn't support it. For one specific slot, property "ibm,slot-surprise-pluggable" of the slot's device node is set to 1 when surprise hotplug is claimed by skiboot. * The interrupts because of presence and link state change are enabled in order to support PCI surprise hotplug. The surprise hotplug events are queued to the PCI slot and they're picked up for further processing in serialized fashion. The surprise and managed hotplug share same code flow except: the affected PEs are put into frozen state to avoid unexpected EEH error reporting in surprise hot remove path. PATCH[1/4] and PATCH[2/4] allows to freeze PEs to avoid unexpected EEH error reporting in PCI surprise hot remove path. PATCH[3/4] clears PE's frozen state on initializing it because the PE might have been put into frozen state in last PCI surprise hot remove. PATCH[4/4] supports PCI surprise hotplug in the PowerNV PCI hotplug driver. Gavin Shan (4): powerpc/eeh: Allow to freeze PE in eeh_pe_set_option() powerpc/eeh: Export eeh_pe_state_mark() powerpc/powernv: Unfreeze PE on allocation drivers/pci/hotplug: Support surprise hotplug arch/powerpc/include/asm/pnv-pci.h | 9 ++ arch/powerpc/kernel/eeh.c | 1 + arch/powerpc/kernel/eeh_pe.c | 1 + arch/powerpc/platforms/powernv/pci-ioda.c | 12 ++ drivers/pci/hotplug/pnv_php.c | 219 ++++++++++++++++++++++++++++++ 5 files changed, 242 insertions(+) -- 2.1.0