From patchwork Wed Jan 28 14:31:33 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cornelia Huck X-Patchwork-Id: 433873 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 39B5C140140 for ; Thu, 29 Jan 2015 01:34:38 +1100 (AEDT) Received: from localhost ([::1]:53819 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YGThU-0007sN-DJ for incoming@patchwork.ozlabs.org; Wed, 28 Jan 2015 09:34:36 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:50559) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YGTf0-0002wq-7f for qemu-devel@nongnu.org; Wed, 28 Jan 2015 09:32:03 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YGTep-0005ZH-9a for qemu-devel@nongnu.org; Wed, 28 Jan 2015 09:32:02 -0500 Received: from e06smtp16.uk.ibm.com ([195.75.94.112]:45919) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YGTeo-0005Yz-Uv for qemu-devel@nongnu.org; Wed, 28 Jan 2015 09:31:51 -0500 Received: from /spool/local by e06smtp16.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Wed, 28 Jan 2015 14:31:46 -0000 Received: from b06cxnps4074.portsmouth.uk.ibm.com (d06relay11.portsmouth.uk.ibm.com [9.149.109.196]) by d06dlp01.portsmouth.uk.ibm.com (Postfix) with ESMTP id 428C817D8066 for ; Wed, 28 Jan 2015 14:31:51 +0000 (GMT) Received: from d06av06.portsmouth.uk.ibm.com (d06av06.portsmouth.uk.ibm.com [9.149.37.217]) by b06cxnps4074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id t0SEVksg4849928 for ; Wed, 28 Jan 2015 14:31:46 GMT Received: from d06av06.portsmouth.uk.ibm.com (localhost [127.0.0.1]) by d06av06.portsmouth.uk.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id t0S9RcsZ029185 for ; Wed, 28 Jan 2015 04:27:39 -0500 Received: from gondolin.boeblingen.de.ibm.com (dyn-9-152-224-150.boeblingen.de.ibm.com [9.152.224.150]) by d06av06.portsmouth.uk.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id t0S9RZ5l028952; Wed, 28 Jan 2015 04:27:38 -0500 From: Cornelia Huck To: qemu-devel@nongnu.org Date: Wed, 28 Jan 2015 15:31:33 +0100 Message-Id: <1422455498-889-5-git-send-email-cornelia.huck@de.ibm.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1422455498-889-1-git-send-email-cornelia.huck@de.ibm.com> References: <1422455498-889-1-git-send-email-cornelia.huck@de.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 15012814-0025-0000-0000-000003A5A6C5 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 195.75.94.112 Cc: Cornelia Huck , borntraeger@de.ibm.com, jfrei@linux.vnet.ibm.com, Yi Min Zhao , agraf@suse.de Subject: [Qemu-devel] [PATCH 4/9] s390x/pci: fix dma notifications in rpcit instruction X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: Yi Min Zhao The virtual I/O address range passed to rpcit instruction might not map to consecutive physical guest pages. For this we have to translate and create mapping notifications for each vioa page separately. Signed-off-by: Yi Min Zhao Signed-off-by: Cornelia Huck --- hw/s390x/s390-pci-inst.c | 20 ++++++++++++-------- 1 file changed, 12 insertions(+), 8 deletions(-) diff --git a/hw/s390x/s390-pci-inst.c b/hw/s390x/s390-pci-inst.c index c269184..9e5bc5b 100644 --- a/hw/s390x/s390-pci-inst.c +++ b/hw/s390x/s390-pci-inst.c @@ -487,7 +487,7 @@ int rpcit_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2) CPUS390XState *env = &cpu->env; uint32_t fh; S390PCIBusDevice *pbdev; - ram_addr_t size; + hwaddr start, end; IOMMUTLBEntry entry; MemoryRegion *mr; @@ -504,7 +504,8 @@ int rpcit_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2) } fh = env->regs[r1] >> 32; - size = env->regs[r2 + 1]; + start = env->regs[r2]; + end = start + env->regs[r2 + 1]; pbdev = s390_pci_find_dev_by_fh(fh); @@ -515,15 +516,18 @@ int rpcit_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2) } mr = pci_device_iommu_address_space(pbdev->pdev)->root; - entry = mr->iommu_ops->translate(mr, env->regs[r2], 0); + while (start < end) { + entry = mr->iommu_ops->translate(mr, start, 0); - if (!entry.translated_addr) { - setcc(cpu, ZPCI_PCI_LS_ERR); - goto out; + if (!entry.translated_addr) { + setcc(cpu, ZPCI_PCI_LS_ERR); + goto out; + } + + memory_region_notify_iommu(mr, entry); + start += entry.addr_mask + 1; } - entry.addr_mask = size - 1; - memory_region_notify_iommu(mr, entry); setcc(cpu, ZPCI_PCI_LS_OK); out: return 0;