From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933597AbZIDJpv (ORCPT ); Fri, 4 Sep 2009 05:45:51 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S933584AbZIDJps (ORCPT ); Fri, 4 Sep 2009 05:45:48 -0400 Received: from tx2ehsobe001.messaging.microsoft.com ([65.55.88.11]:53980 "EHLO TX2EHSOBE002.bigfish.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933476AbZIDJpp (ORCPT ); Fri, 4 Sep 2009 05:45:45 -0400 X-SpamScore: 3 X-BigFish: VPS3(zzzz1202hzzz32i203h43j62h) X-Spam-TCS-SCL: 1:0 X-FB-SS: 5, X-WSS-ID: 0KPFXR8-03-O44-01 From: Joerg Roedel To: iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org CC: Joerg Roedel Subject: [PATCH 3/8] x86/amd-iommu: Introduce function for iommu-local domain flush Date: Fri, 4 Sep 2009 11:44:37 +0200 Message-ID: <1252057482-32207-4-git-send-email-joerg.roedel@amd.com> X-Mailer: git-send-email 1.6.3.3 In-Reply-To: <1252057482-32207-1-git-send-email-joerg.roedel@amd.com> References: <1252057482-32207-1-git-send-email-joerg.roedel@amd.com> X-OriginalArrivalTime: 04 Sep 2009 09:44:45.0195 (UTC) FILETIME=[55ADA5B0:01CA2D44] MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch introduces a function to flush all domain tlbs for on one given IOMMU. This is required later to reset the command buffer on one IOMMU. Signed-off-by: Joerg Roedel --- arch/x86/kernel/amd_iommu.c | 49 +++++++++++++++++++++++++++++-------------- 1 files changed, 33 insertions(+), 16 deletions(-) diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c index e62b35f..64cc582 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -465,38 +465,55 @@ static void iommu_flush_tlb_pde(struct amd_iommu *iommu, u16 domid) } /* - * This function is used to flush the IO/TLB for a given protection domain - * on every IOMMU in the system + * This function flushes one domain on one IOMMU */ -static void iommu_flush_domain(u16 domid) +static void flush_domain_on_iommu(struct amd_iommu *iommu, u16 domid) { - unsigned long flags; - struct amd_iommu *iommu; struct iommu_cmd cmd; - - INC_STATS_COUNTER(domain_flush_all); + unsigned long flags; __iommu_build_inv_iommu_pages(&cmd, CMD_INV_IOMMU_ALL_PAGES_ADDRESS, domid, 1, 1); - for_each_iommu(iommu) { - spin_lock_irqsave(&iommu->lock, flags); - __iommu_queue_command(iommu, &cmd); - __iommu_completion_wait(iommu); - __iommu_wait_for_completion(iommu); - spin_unlock_irqrestore(&iommu->lock, flags); - } + spin_lock_irqsave(&iommu->lock, flags); + __iommu_queue_command(iommu, &cmd); + __iommu_completion_wait(iommu); + __iommu_wait_for_completion(iommu); + spin_unlock_irqrestore(&iommu->lock, flags); } -void amd_iommu_flush_all_domains(void) +static void flush_all_domains_on_iommu(struct amd_iommu *iommu) { int i; for (i = 1; i < MAX_DOMAIN_ID; ++i) { if (!test_bit(i, amd_iommu_pd_alloc_bitmap)) continue; - iommu_flush_domain(i); + flush_domain_on_iommu(iommu, i); } + +} + +/* + * This function is used to flush the IO/TLB for a given protection domain + * on every IOMMU in the system + */ +static void iommu_flush_domain(u16 domid) +{ + struct amd_iommu *iommu; + + INC_STATS_COUNTER(domain_flush_all); + + for_each_iommu(iommu) + flush_domain_on_iommu(iommu, domid); +} + +void amd_iommu_flush_all_domains(void) +{ + struct amd_iommu *iommu; + + for_each_iommu(iommu) + flush_all_domains_on_iommu(iommu); } void amd_iommu_flush_all_devices(void) -- 1.6.3.3