Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965211AbbLOMBF (ORCPT ); Tue, 15 Dec 2015 07:01:05 -0500 Received: from mail-pf0-f182.google.com ([209.85.192.182]:34010 "EHLO mail-pf0-f182.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S964921AbbLOMBB (ORCPT ); Tue, 15 Dec 2015 07:01:01 -0500 From: Magnus Damm To: iommu@lists.linux-foundation.org Cc: laurent.pinchart+renesas@ideasonboard.com, geert+renesas@glider.be, linux-sh@vger.kernel.org, joro@8bytes.org, linux-kernel@vger.kernel.org, horms+renesas@verge.net.au, Magnus Damm Date: Tue, 15 Dec 2015 21:02:39 +0900 Message-Id: <20151215120239.26216.43390.sendpatchset@little-apple> In-Reply-To: <20151215120212.26216.61530.sendpatchset@little-apple> References: <20151215120212.26216.61530.sendpatchset@little-apple> Subject: [PATCH 03/06] iommu/ipmmu-vmsa: Break out utlb control function Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2405 Lines: 76 From: Magnus Damm Introduce the function ipmmu_utlb_ctrl() that shares code to enable or disable utlbs. Signed-off-by: Magnus Damm --- drivers/iommu/ipmmu-vmsa.c | 30 +++++++++++++++--------------- 1 file changed, 15 insertions(+), 15 deletions(-) --- 0004/drivers/iommu/ipmmu-vmsa.c +++ work/drivers/iommu/ipmmu-vmsa.c 2015-12-15 13:17:40.580513000 +0900 @@ -279,9 +279,18 @@ static void ipmmu_utlb_enable(struct ipm static void ipmmu_utlb_disable(struct ipmmu_vmsa_domain *domain, unsigned int utlb) { - struct ipmmu_vmsa_device *mmu = domain->mmu; + ipmmu_write(domain->mmu, IMUCTR(utlb), 0); +} + +static void ipmmu_utlb_ctrl(struct ipmmu_vmsa_domain *domain, + void (*fn)(struct ipmmu_vmsa_domain *, + unsigned int utlb), struct device *dev) +{ + struct ipmmu_vmsa_dev_data *dev_data = get_dev_data(dev); + unsigned int i; - ipmmu_write(mmu, IMUCTR(utlb), 0); + for (i = 0; i < dev_data->num_utlbs; ++i) + fn(domain, dev_data->utlbs[i]); } static void ipmmu_tlb_flush_all(void *cookie) @@ -503,7 +512,6 @@ static int ipmmu_attach_device(struct io struct ipmmu_vmsa_device *mmu = dev_data->mmu; struct ipmmu_vmsa_domain *domain = to_vmsa_domain(io_domain); unsigned long flags; - unsigned int i; int ret = 0; if (!mmu) { @@ -529,24 +537,16 @@ static int ipmmu_attach_device(struct io spin_unlock_irqrestore(&domain->lock, flags); - if (ret < 0) - return ret; + if (!ret) + ipmmu_utlb_ctrl(domain, ipmmu_utlb_enable, dev); - for (i = 0; i < dev_data->num_utlbs; ++i) - ipmmu_utlb_enable(domain, dev_data->utlbs[i]); - - return 0; + return ret; } static void ipmmu_detach_device(struct iommu_domain *io_domain, struct device *dev) { - struct ipmmu_vmsa_dev_data *dev_data = get_dev_data(dev); - struct ipmmu_vmsa_domain *domain = to_vmsa_domain(io_domain); - unsigned int i; - - for (i = 0; i < dev_data->num_utlbs; ++i) - ipmmu_utlb_disable(domain, dev_data->utlbs[i]); + ipmmu_utlb_ctrl(to_vmsa_domain(io_domain), ipmmu_utlb_disable, dev); /* * TODO: Optimize by disabling the context when no device is attached. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/