From patchwork Mon Jan 26 23:51:39 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joerg Roedel X-Patchwork-Id: 5713391 Return-Path: X-Original-To: patchwork-linux-arm@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 B09269F1D6 for ; Mon, 26 Jan 2015 23:56:13 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id EF446201BB for ; Mon, 26 Jan 2015 23:56:11 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 08F1D2018E for ; Mon, 26 Jan 2015 23:56:11 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1YFtU9-0005h1-3c; Mon, 26 Jan 2015 23:54:25 +0000 Received: from 8bytes.org ([81.169.241.247] helo=theia.8bytes.org) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1YFtSK-0002A8-Tm; Mon, 26 Jan 2015 23:52:36 +0000 Received: by theia.8bytes.org (Postfix, from userid 1000) id D6C6A3FE; Tue, 27 Jan 2015 00:51:47 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=8bytes.org; s=mail-1; t=1422316307; bh=XtXiJMjccwVf7P0Fti0ii1tG+cyHL6elxBCVP8IMnSE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YM+SbWPsH5Ukf0VtnOeCw2t1CRgAsXVu4lDTBpMy+8Zwv4qIXJsoPEoW+MtkuP/wc JgV1E0Vbpqjn0GCPmlAmzyWjUtL1ZZ0ScPBjb62zaFg2DBooMu97OlobjwKifZN7Qu h5PiEPLWOTtTR8Xs8kRGHnPxG1/OAxuoNcJcwTmtOWDQVABzBwTG/yibyr+/kZBMMt 6YEZMXOLAa5+5+eb4dAIVPb7cw17LuGk5WEnNQocMkSe0soY5sNQAqimrcQ7+/wLUb 1qcxNOYqfeYw5fdAYRXJWFs+835O1l6TRW43LtQ7BhBGkbyA6sBPA5v6klYPnwdwdi ynVfWdGD8jKjA== From: Joerg Roedel To: iommu@lists.linux-foundation.org Subject: [PATCH 09/15] iommu/tegra-gart: Make use of domain_alloc and domain_free Date: Tue, 27 Jan 2015 00:51:39 +0100 Message-Id: <1422316305-19216-10-git-send-email-joro@8bytes.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1422316305-19216-1-git-send-email-joro@8bytes.org> References: <1422316305-19216-1-git-send-email-joro@8bytes.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150126_155233_405729_9F16F68F X-CRM114-Status: GOOD ( 15.69 ) X-Spam-Score: -0.1 (/) Cc: Alexandre Courbot , linux-samsung-soc@vger.kernel.org, Heiko Stuebner , Arnd Bergmann , Stephen Warren , Joerg Roedel , Will Deacon , linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org, Alex Williamson , Kukjin Kim , Thierry Reding , jroedel@suse.de, linux-tegra@vger.kernel.org, David Woodhouse , linux-arm-kernel@lists.infradead.org, Hiroshi Doyu X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_MED, T_DKIM_INVALID, T_RP_MATCHES_RCVD, 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: Joerg Roedel Implement domain_alloc and domain_free iommu-ops as a replacement for domain_init/domain_destroy. Signed-off-by: Joerg Roedel --- drivers/iommu/tegra-gart.c | 67 +++++++++++++++++++++++++++++++--------------- 1 file changed, 46 insertions(+), 21 deletions(-) diff --git a/drivers/iommu/tegra-gart.c b/drivers/iommu/tegra-gart.c index f722a0c..34ca333 100644 --- a/drivers/iommu/tegra-gart.c +++ b/drivers/iommu/tegra-gart.c @@ -63,11 +63,21 @@ struct gart_device { struct device *dev; }; +struct gart_domain { + struct iommu_domain domain; /* generic domain handle */ + struct gart_device *gart; /* link to gart device */ +}; + static struct gart_device *gart_handle; /* unique for a system */ #define GART_PTE(_pfn) \ (GART_ENTRY_PHYS_ADDR_VALID | ((_pfn) << PAGE_SHIFT)) +static struct gart_domain *to_gart_domain(struct iommu_domain *dom) +{ + return container_of(dom, struct gart_domain, domain); +} + /* * Any interaction between any block on PPSB and a block on APB or AHB * must have these read-back to ensure the APB/AHB bus transaction is @@ -156,6 +166,7 @@ static inline bool gart_iova_range_valid(struct gart_device *gart, static int gart_iommu_attach_dev(struct iommu_domain *domain, struct device *dev) { + struct gart_domain *gart_domain = to_gart_domain(domain); struct gart_device *gart; struct gart_client *client, *c; int err = 0; @@ -163,7 +174,7 @@ static int gart_iommu_attach_dev(struct iommu_domain *domain, gart = gart_handle; if (!gart) return -EINVAL; - domain->priv = gart; + gart_domain->gart = gart; domain->geometry.aperture_start = gart->iovmm_base; domain->geometry.aperture_end = gart->iovmm_base + @@ -198,7 +209,8 @@ fail: static void gart_iommu_detach_dev(struct iommu_domain *domain, struct device *dev) { - struct gart_device *gart = domain->priv; + struct gart_domain *gart_domain = to_gart_domain(domain); + struct gart_device *gart = gart_domain->gart; struct gart_client *c; spin_lock(&gart->client_lock); @@ -216,33 +228,44 @@ out: spin_unlock(&gart->client_lock); } -static int gart_iommu_domain_init(struct iommu_domain *domain) +static struct iommu_domain *gart_iommu_domain_alloc(enum iommu_domain_type type) { - return 0; + struct gart_domain *gart_domain; + + if (type != IOMMU_DOMAIN_UNMANAGED) + return NULL; + + gart_domain = kzalloc(sizeof(*gart_domain), GFP_KERNEL); + if (!gart_domain) + return NULL; + + return &gart_domain->domain; } -static void gart_iommu_domain_destroy(struct iommu_domain *domain) +static void gart_iommu_domain_free(struct iommu_domain *domain) { - struct gart_device *gart = domain->priv; - - if (!gart) - return; + struct gart_domain *gart_domain = to_gart_domain(domain); + struct gart_device *gart = gart_domain->gart; - spin_lock(&gart->client_lock); - if (!list_empty(&gart->client)) { - struct gart_client *c; + if (gart) { + spin_lock(&gart->client_lock); + if (!list_empty(&gart->client)) { + struct gart_client *c; - list_for_each_entry(c, &gart->client, list) - gart_iommu_detach_dev(domain, c->dev); + list_for_each_entry(c, &gart->client, list) + gart_iommu_detach_dev(domain, c->dev); + } + spin_unlock(&gart->client_lock); } - spin_unlock(&gart->client_lock); - domain->priv = NULL; + + kfree(gart_domain); } static int gart_iommu_map(struct iommu_domain *domain, unsigned long iova, phys_addr_t pa, size_t bytes, int prot) { - struct gart_device *gart = domain->priv; + struct gart_domain *gart_domain = to_gart_domain(domain); + struct gart_device *gart = gart_domain->gart; unsigned long flags; unsigned long pfn; @@ -265,7 +288,8 @@ static int gart_iommu_map(struct iommu_domain *domain, unsigned long iova, static size_t gart_iommu_unmap(struct iommu_domain *domain, unsigned long iova, size_t bytes) { - struct gart_device *gart = domain->priv; + struct gart_domain *gart_domain = to_gart_domain(domain); + struct gart_device *gart = gart_domain->gart; unsigned long flags; if (!gart_iova_range_valid(gart, iova, bytes)) @@ -281,7 +305,8 @@ static size_t gart_iommu_unmap(struct iommu_domain *domain, unsigned long iova, static phys_addr_t gart_iommu_iova_to_phys(struct iommu_domain *domain, dma_addr_t iova) { - struct gart_device *gart = domain->priv; + struct gart_domain *gart_domain = to_gart_domain(domain); + struct gart_device *gart = gart_domain->gart; unsigned long pte; phys_addr_t pa; unsigned long flags; @@ -310,8 +335,8 @@ static bool gart_iommu_capable(enum iommu_cap cap) static const struct iommu_ops gart_iommu_ops = { .capable = gart_iommu_capable, - .domain_init = gart_iommu_domain_init, - .domain_destroy = gart_iommu_domain_destroy, + .domain_alloc = gart_iommu_domain_alloc, + .domain_free = gart_iommu_domain_free, .attach_dev = gart_iommu_attach_dev, .detach_dev = gart_iommu_detach_dev, .map = gart_iommu_map,