From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e23smtp04.au.ibm.com (e23smtp04.au.ibm.com [202.81.31.146]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id F1A891401B9 for ; Mon, 5 May 2014 11:27:57 +1000 (EST) Received: from /spool/local by e23smtp04.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 5 May 2014 11:27:56 +1000 Received: from d23relay05.au.ibm.com (d23relay05.au.ibm.com [9.190.235.152]) by d23dlp03.au.ibm.com (Postfix) with ESMTP id 019673578056 for ; Mon, 5 May 2014 11:27:53 +1000 (EST) Received: from d23av01.au.ibm.com (d23av01.au.ibm.com [9.190.234.96]) by d23relay05.au.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id s4516cbF53412014 for ; Mon, 5 May 2014 11:06:38 +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 s451RrgU011461 for ; Mon, 5 May 2014 11:27:53 +1000 From: Gavin Shan To: linuxppc-dev@lists.ozlabs.org, kvm@vger.kernel.org, kvm-ppc@vger.kernel.org Subject: [PATCH 04/22] powerpc/eeh: Search EEH PE by guest address Date: Mon, 5 May 2014 11:27:53 +1000 Message-Id: <1399253291-3975-5-git-send-email-gwshan@linux.vnet.ibm.com> In-Reply-To: <1399253291-3975-1-git-send-email-gwshan@linux.vnet.ibm.com> References: <1399253291-3975-1-git-send-email-gwshan@linux.vnet.ibm.com> Cc: aik@ozlabs.ru, alex.williamson@redhat.com, qiudayu@linux.vnet.ibm.com, Gavin Shan List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , The patch introduces function eeh_vfio_pe_get() to search the EEH PE according to its guest address, which is made up of KVM indicator, PHB ID and PE configuration address. The function will be useful in backends for EEH RTAS emulation. Signed-off-by: Gavin Shan --- arch/powerpc/include/asm/eeh.h | 1 + arch/powerpc/kernel/eeh_pe.c | 40 ++++++++++++++++++++++++++++++++++++++++ 2 files changed, 41 insertions(+) diff --git a/arch/powerpc/include/asm/eeh.h b/arch/powerpc/include/asm/eeh.h index b12e3e9..3807167 100644 --- a/arch/powerpc/include/asm/eeh.h +++ b/arch/powerpc/include/asm/eeh.h @@ -387,6 +387,7 @@ static inline void eeh_remove_device(struct pci_dev *dev) { } #ifdef CONFIG_KVM_EEH struct eeh_dev *eeh_vfio_dev_get(struct eeh_vfio_pci_addr *addr); +struct eeh_pe *eeh_vfio_pe_get(struct eeh_vfio_pci_addr *addr); #endif /* CONFIG_KVM_EEH */ diff --git a/arch/powerpc/kernel/eeh_pe.c b/arch/powerpc/kernel/eeh_pe.c index dba7c82..1bd7b1f 100644 --- a/arch/powerpc/kernel/eeh_pe.c +++ b/arch/powerpc/kernel/eeh_pe.c @@ -249,6 +249,46 @@ struct eeh_pe *eeh_pe_get(struct eeh_dev *edev) } #ifdef CONFIG_KVM_EEH +static void *__eeh_vfio_pe_get(void *data, void *flag) +{ + struct eeh_pe *pe = (struct eeh_pe *)data; + struct eeh_vfio_pci_addr *addr = (struct eeh_vfio_pci_addr *)flag; + + if (!eeh_pe_passed(pe)) + return NULL; + + /* Comparing the address */ + if (addr->kvm == pe->gaddr.kvm && + addr->buid_hi == pe->gaddr.buid_hi && + addr->buid_lo == pe->gaddr.buid_lo && + addr->pe_addr == pe->gaddr.pe_addr) + return pe; + + return NULL; +} + +/** + * eeh_vfio_pe_get - Search EEH PE based on guest's address + * @addr: EEH PE guest address + * + * Search the EEH PE according to the guest address, which + * is made up of VM indicator, PHB BUID, and PE configuration + * address. + */ +struct eeh_pe *eeh_vfio_pe_get(struct eeh_vfio_pci_addr *addr) +{ + struct eeh_pe *root; + struct eeh_pe *pe; + + list_for_each_entry(root, &eeh_phb_pe, child) { + pe = eeh_pe_traverse(root, __eeh_vfio_pe_get, addr); + if (pe) + return pe; + } + + return NULL; +} + static void *__eeh_vfio_dev_get(void *data, void *flag) { struct eeh_pe *pe = (struct eeh_pe *)data; -- 1.8.3.2