From patchwork Wed May 11 14:58:10 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cornelia Huck X-Patchwork-Id: 9071581 Return-Path: X-Original-To: patchwork-qemu-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id C12099F1C1 for ; Wed, 11 May 2016 15:00:47 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 0D13C20103 for ; Wed, 11 May 2016 15:00:47 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id F3BD3201C0 for ; Wed, 11 May 2016 15:00:44 +0000 (UTC) Received: from localhost ([::1]:52735 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b0Vcy-0004GQ-2g for patchwork-qemu-devel@patchwork.kernel.org; Wed, 11 May 2016 11:00:44 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:51803) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b0Vap-000056-30 for qemu-devel@nongnu.org; Wed, 11 May 2016 10:58:36 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1b0Vaj-0007MP-Nc for qemu-devel@nongnu.org; Wed, 11 May 2016 10:58:30 -0400 Received: from e06smtp07.uk.ibm.com ([195.75.94.103]:33467) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b0Vaj-0007LW-BU for qemu-devel@nongnu.org; Wed, 11 May 2016 10:58:25 -0400 Received: from localhost by e06smtp07.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Wed, 11 May 2016 15:58:21 +0100 X-IBM-Helo: d06dlp03.portsmouth.uk.ibm.com X-IBM-MailFrom: cornelia.huck@de.ibm.com X-IBM-RcptTo: qemu-devel@nongnu.org Received: from b06cxnps3074.portsmouth.uk.ibm.com (d06relay09.portsmouth.uk.ibm.com [9.149.109.194]) by d06dlp03.portsmouth.uk.ibm.com (Postfix) with ESMTP id EB6D51B08075 for ; Wed, 11 May 2016 15:59:14 +0100 (BST) Received: from d06av11.portsmouth.uk.ibm.com (d06av11.portsmouth.uk.ibm.com [9.149.37.252]) by b06cxnps3074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u4BEwLDT7405844 for ; Wed, 11 May 2016 14:58:21 GMT Received: from d06av11.portsmouth.uk.ibm.com (localhost [127.0.0.1]) by d06av11.portsmouth.uk.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id u4BEwKa1000740 for ; Wed, 11 May 2016 08:58:21 -0600 Received: from tuxmaker.boeblingen.de.ibm.com (tuxmaker.boeblingen.de.ibm.com [9.152.85.9]) by d06av11.portsmouth.uk.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id u4BEwDBd032732 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA256 bits=256 verify=NO); Wed, 11 May 2016 08:58:20 -0600 From: Cornelia Huck To: qemu-devel@nongnu.org Date: Wed, 11 May 2016 16:58:10 +0200 Message-Id: <1462978692-33738-19-git-send-email-cornelia.huck@de.ibm.com> X-Mailer: git-send-email 2.6.6 In-Reply-To: <1462978692-33738-1-git-send-email-cornelia.huck@de.ibm.com> References: <1462978692-33738-1-git-send-email-cornelia.huck@de.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16051114-0029-0000-0000-00001E06429D X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 195.75.94.103 Subject: [Qemu-devel] [PATCH v2 for-2.7 18/20] s390x/pci: enhance mpcifc_service_call X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Cornelia Huck , borntraeger@de.ibm.com, jfrei@linux.vnet.ibm.com, Yi Min Zhao , agraf@suse.de Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Yi Min Zhao Enhance error handling for mpcifc_service_call() to propagate errors to guest by setting status codes or triggering program interrupts. Signed-off-by: Yi Min Zhao Reviewed-by: Pierre Morel Signed-off-by: Cornelia Huck --- hw/s390x/s390-pci-inst.c | 53 +++++++++++++++++++++++++++++++++++++++++------- hw/s390x/s390-pci-inst.h | 8 ++++++++ 2 files changed, 54 insertions(+), 7 deletions(-) diff --git a/hw/s390x/s390-pci-inst.c b/hw/s390x/s390-pci-inst.c index 4b4dd63..479375f 100644 --- a/hw/s390x/s390-pci-inst.c +++ b/hw/s390x/s390-pci-inst.c @@ -721,7 +721,7 @@ void pci_dereg_ioat(S390PCIBusDevice *pbdev) int mpcifc_service_call(S390CPU *cpu, uint8_t r1, uint64_t fiba, uint8_t ar) { CPUS390XState *env = &cpu->env; - uint8_t oc; + uint8_t oc, dmaas; uint32_t fh; ZpciFib fib; S390PCIBusDevice *pbdev; @@ -733,6 +733,7 @@ int mpcifc_service_call(S390CPU *cpu, uint8_t r1, uint64_t fiba, uint8_t ar) } oc = env->regs[r1] & 0xff; + dmaas = (env->regs[r1] >> 16) & 0xff; fh = env->regs[r1] >> 32; if (fiba & 0x7) { @@ -751,27 +752,65 @@ int mpcifc_service_call(S390CPU *cpu, uint8_t r1, uint64_t fiba, uint8_t ar) return 0; } + if (fib.fmt != 0) { + program_interrupt(env, PGM_OPERAND, 6); + return 0; + } + switch (oc) { case ZPCI_MOD_FC_REG_INT: - if (reg_irqs(env, pbdev, fib)) { + if (pbdev->summary_ind) { cc = ZPCI_PCI_LS_ERR; + s390_set_status_code(env, r1, ZPCI_MOD_ST_SEQUENCE); + } else if (reg_irqs(env, pbdev, fib)) { + cc = ZPCI_PCI_LS_ERR; + s390_set_status_code(env, r1, ZPCI_MOD_ST_RES_NOT_AVAIL); } break; case ZPCI_MOD_FC_DEREG_INT: - pci_dereg_irqs(pbdev); + if (!pbdev->summary_ind) { + cc = ZPCI_PCI_LS_ERR; + s390_set_status_code(env, r1, ZPCI_MOD_ST_SEQUENCE); + } else { + pci_dereg_irqs(pbdev); + } break; case ZPCI_MOD_FC_REG_IOAT: - if (reg_ioat(env, pbdev, fib)) { + if (dmaas != 0) { cc = ZPCI_PCI_LS_ERR; + s390_set_status_code(env, r1, ZPCI_MOD_ST_DMAAS_INVAL); + } else if (pbdev->iommu_enabled) { + cc = ZPCI_PCI_LS_ERR; + s390_set_status_code(env, r1, ZPCI_MOD_ST_SEQUENCE); + } else if (reg_ioat(env, pbdev, fib)) { + cc = ZPCI_PCI_LS_ERR; + s390_set_status_code(env, r1, ZPCI_MOD_ST_INSUF_RES); } break; case ZPCI_MOD_FC_DEREG_IOAT: - pci_dereg_ioat(pbdev); + if (dmaas != 0) { + cc = ZPCI_PCI_LS_ERR; + s390_set_status_code(env, r1, ZPCI_MOD_ST_DMAAS_INVAL); + } else if (!pbdev->iommu_enabled) { + cc = ZPCI_PCI_LS_ERR; + s390_set_status_code(env, r1, ZPCI_MOD_ST_SEQUENCE); + } else { + pci_dereg_ioat(pbdev); + } break; case ZPCI_MOD_FC_REREG_IOAT: - pci_dereg_ioat(pbdev); - if (reg_ioat(env, pbdev, fib)) { + if (dmaas != 0) { cc = ZPCI_PCI_LS_ERR; + s390_set_status_code(env, r1, ZPCI_MOD_ST_DMAAS_INVAL); + } else if (!pbdev->iommu_enabled) { + cc = ZPCI_PCI_LS_ERR; + s390_set_status_code(env, r1, ZPCI_MOD_ST_SEQUENCE); + } else { + pci_dereg_ioat(pbdev); + if (reg_ioat(env, pbdev, fib)) { + cc = ZPCI_PCI_LS_ERR; + s390_set_status_code(env, r1, ZPCI_MOD_ST_INSUF_RES); + } } break; case ZPCI_MOD_FC_RESET_ERROR: diff --git a/hw/s390x/s390-pci-inst.h b/hw/s390x/s390-pci-inst.h index 9fc94e9..b084f23 100644 --- a/hw/s390x/s390-pci-inst.h +++ b/hw/s390x/s390-pci-inst.h @@ -231,6 +231,14 @@ typedef struct ClpReqRspQueryPciGrp { #define ZPCI_PCI_LS_BUSY 2 #define ZPCI_PCI_LS_INVAL_HANDLE 3 +/* Modify PCI status codes */ +#define ZPCI_MOD_ST_RES_NOT_AVAIL 4 +#define ZPCI_MOD_ST_INSUF_RES 16 +#define ZPCI_MOD_ST_SEQUENCE 24 +#define ZPCI_MOD_ST_DMAAS_INVAL 28 +#define ZPCI_MOD_ST_FRAME_INVAL 32 +#define ZPCI_MOD_ST_ERROR_RECOVER 40 + /* Modify PCI Function Controls */ #define ZPCI_MOD_FC_REG_INT 2 #define ZPCI_MOD_FC_DEREG_INT 3