From patchwork Tue Jul 19 12:55:11 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Auger X-Patchwork-Id: 9237103 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id D3BE2607DA for ; Tue, 19 Jul 2016 12:59:55 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C3A0526B4A for ; Tue, 19 Jul 2016 12:59:55 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id AD24C26E5D; Tue, 19 Jul 2016 12:59:55 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 652AD26C2F for ; Tue, 19 Jul 2016 12:59:55 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.85_2 #1 (Red Hat Linux)) id 1bPUbV-0003w3-4K; Tue, 19 Jul 2016 12:58:29 +0000 Received: from mx1.redhat.com ([209.132.183.28]) by bombadil.infradead.org with esmtps (Exim 4.85_2 #1 (Red Hat Linux)) id 1bPUZT-0002JK-Hv for linux-arm-kernel@lists.infradead.org; Tue, 19 Jul 2016 12:56:24 +0000 Received: from int-mx14.intmail.prod.int.phx2.redhat.com (int-mx14.intmail.prod.int.phx2.redhat.com [10.5.11.27]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id A641B7F6B1; Tue, 19 Jul 2016 12:56:05 +0000 (UTC) Received: from localhost.redhat.com (vpn1-4-201.ams2.redhat.com [10.36.4.201]) by int-mx14.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u6JCtEj5005844; Tue, 19 Jul 2016 08:56:00 -0400 From: Eric Auger To: eric.auger@redhat.com, eric.auger.pro@gmail.com, marc.zyngier@arm.com, christoffer.dall@linaro.org, andre.przywara@arm.com, robin.murphy@arm.com, alex.williamson@redhat.com, will.deacon@arm.com, joro@8bytes.org, tglx@linutronix.de, jason@lakedaemon.net, linux-arm-kernel@lists.infradead.org Subject: [PATCH v11 8/8] iommu/arm-smmu: get/put the msi cookie Date: Tue, 19 Jul 2016 12:55:11 +0000 Message-Id: <1468932911-23062-9-git-send-email-eric.auger@redhat.com> In-Reply-To: <1468932911-23062-1-git-send-email-eric.auger@redhat.com> References: <1468932911-23062-1-git-send-email-eric.auger@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.27 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.25]); Tue, 19 Jul 2016 12:56:06 +0000 (UTC) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160719_055623_868231_A6D30F2D X-CRM114-Status: GOOD ( 12.99 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: drjones@redhat.com, kvm@vger.kernel.org, Jean-Philippe.Brucker@arm.com, Manish.Jaggi@caviumnetworks.com, p.fedin@samsung.com, linux-kernel@vger.kernel.org, Bharat.Bhushan@freescale.com, iommu@lists.linux-foundation.org, pranav.sawargaonkar@gmail.com, pbonzini@redhat.com, kvmarm@lists.cs.columbia.edu, robert.richter@caviumnetworks.com, yehuday@marvell.com MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP For IOMMU_DOMAIN_UNMANAGED type we now also get the msi cookie in both arm-smmu and arm-smmu-v3. This initializes resources for MSI doorbell mapping. Signed-off-by: Eric Auger --- drivers/iommu/arm-smmu-v3.c | 16 ++++++++++++---- drivers/iommu/arm-smmu.c | 15 +++++++++++---- 2 files changed, 23 insertions(+), 8 deletions(-) diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c index 066d92c..960d377 100644 --- a/drivers/iommu/arm-smmu-v3.c +++ b/drivers/iommu/arm-smmu-v3.c @@ -22,6 +22,7 @@ #include #include +#include #include #include #include @@ -1412,15 +1413,21 @@ static struct iommu_domain *arm_smmu_domain_alloc(unsigned type) return NULL; if (type == IOMMU_DOMAIN_DMA && - iommu_get_dma_cookie(&smmu_domain->domain)) { - kfree(smmu_domain); - return NULL; - } + iommu_get_dma_cookie(&smmu_domain->domain)) + goto err; + + if (type == IOMMU_DOMAIN_UNMANAGED && + iommu_get_msi_cookie(&smmu_domain->domain)) + goto err; + smmu_domain->domain.msi_geometry = msi_geometry; mutex_init(&smmu_domain->init_mutex); spin_lock_init(&smmu_domain->pgtbl_lock); return &smmu_domain->domain; +err: + kfree(smmu_domain); + return NULL; } static int arm_smmu_bitmap_alloc(unsigned long *map, int span) @@ -1446,6 +1453,7 @@ static void arm_smmu_domain_free(struct iommu_domain *domain) struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); struct arm_smmu_device *smmu = smmu_domain->smmu; + iommu_put_msi_cookie(domain); iommu_put_dma_cookie(domain); free_io_pgtable_ops(smmu_domain->pgtbl_ops); diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c index 9755a1b..867910b 100644 --- a/drivers/iommu/arm-smmu.c +++ b/drivers/iommu/arm-smmu.c @@ -30,6 +30,7 @@ #include #include +#include #include #include #include @@ -1052,10 +1053,12 @@ static struct iommu_domain *arm_smmu_domain_alloc(unsigned type) return NULL; if (type == IOMMU_DOMAIN_DMA && - iommu_get_dma_cookie(&smmu_domain->domain)) { - kfree(smmu_domain); - return NULL; - } + iommu_get_dma_cookie(&smmu_domain->domain)) + goto err; + + if (type == IOMMU_DOMAIN_UNMANAGED && + iommu_get_msi_cookie(&smmu_domain->domain)) + goto err; smmu_domain->domain.msi_geometry = msi_geometry; @@ -1063,6 +1066,9 @@ static struct iommu_domain *arm_smmu_domain_alloc(unsigned type) spin_lock_init(&smmu_domain->pgtbl_lock); return &smmu_domain->domain; +err: + kfree(smmu_domain); + return NULL; } static void arm_smmu_domain_free(struct iommu_domain *domain) @@ -1073,6 +1079,7 @@ static void arm_smmu_domain_free(struct iommu_domain *domain) * Free the domain resources. We assume that all devices have * already been detached. */ + iommu_put_msi_cookie(domain); iommu_put_dma_cookie(domain); arm_smmu_destroy_domain_context(domain); kfree(smmu_domain);