From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 945D1C433E4 for ; Fri, 26 Jun 2020 20:04:56 +0000 (UTC) Received: from fraxinus.osuosl.org (smtp4.osuosl.org [140.211.166.137]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 671012100A for ; Fri, 26 Jun 2020 20:04:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="QqKP898I" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 671012100A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by fraxinus.osuosl.org (Postfix) with ESMTP id 463EE86C2F; Fri, 26 Jun 2020 20:04:56 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from fraxinus.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 7NQmfnrRMQ5Q; Fri, 26 Jun 2020 20:04:55 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by fraxinus.osuosl.org (Postfix) with ESMTP id 9A5C186C35; Fri, 26 Jun 2020 20:04:55 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 76202C0895; Fri, 26 Jun 2020 20:04:55 +0000 (UTC) Received: from whitealder.osuosl.org (smtp1.osuosl.org [140.211.166.138]) by lists.linuxfoundation.org (Postfix) with ESMTP id 06DCFC016F for ; Fri, 26 Jun 2020 20:04:54 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by whitealder.osuosl.org (Postfix) with ESMTP id E751C8789B for ; Fri, 26 Jun 2020 20:04:53 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from whitealder.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id SIkEZdaxgxtH for ; Fri, 26 Jun 2020 20:04:52 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from m43-7.mailgun.net (m43-7.mailgun.net [69.72.43.7]) by whitealder.osuosl.org (Postfix) with ESMTPS id 07C9387CEC for ; Fri, 26 Jun 2020 20:04:46 +0000 (UTC) DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1593201890; h=References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=D85sGJCwjjAQqj2vSMlo3N0ypP1ykjFcdiizwNh3ejQ=; b=QqKP898Ih2sbWTTK0Ff+m1lVHXjOXwChf8PBVZVoOEEMkRln+jIdFvGp7j3uE1AD6gg7xsEf MHFtEoDhtURRZDWXYneiyvSXQeP4+/Y7FDHK79TwGTP4ofa6nCYtPWWo3fKJ2YRohu4tEXRv CIttRd0vJ4xQl+mWhrNG0U+Trw0= X-Mailgun-Sending-Ip: 69.72.43.7 X-Mailgun-Sid: WyI3NDkwMCIsICJpb21tdUBsaXN0cy5saW51eC1mb3VuZGF0aW9uLm9yZyIsICJiZTllNGEiXQ== Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n15.prod.us-east-1.postgun.com with SMTP id 5ef654cfbfb34e631c1a734c (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Fri, 26 Jun 2020 20:04:31 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 0A665C4344C; Fri, 26 Jun 2020 20:04:31 +0000 (UTC) Received: from jordan-laptop.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: jcrouse) by smtp.codeaurora.org (Postfix) with ESMTPSA id C5522C433A0; Fri, 26 Jun 2020 20:04:28 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org C5522C433A0 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=jcrouse@codeaurora.org From: Jordan Crouse To: linux-arm-msm@vger.kernel.org Subject: [PATCH v2 5/6] drm/msm: Add support for address space instances Date: Fri, 26 Jun 2020 14:04:13 -0600 Message-Id: <20200626200414.14382-6-jcrouse@codeaurora.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200626200414.14382-1-jcrouse@codeaurora.org> References: <20200626200414.14382-1-jcrouse@codeaurora.org> Cc: David Airlie , Sean Paul , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, John Stultz , Daniel Vetter , freedreno@lists.freedesktop.org X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" Add support for allocating an address space instance. Targets that support per-instance pagetables should implement their own function to allocate a new instance. The default will return the existing generic address space. Signed-off-by: Jordan Crouse --- drivers/gpu/drm/msm/msm_drv.c | 15 +++++++++------ drivers/gpu/drm/msm/msm_drv.h | 4 ++++ drivers/gpu/drm/msm/msm_gem_vma.c | 9 +++++++++ drivers/gpu/drm/msm/msm_gpu.c | 17 +++++++++++++++++ drivers/gpu/drm/msm/msm_gpu.h | 5 +++++ 5 files changed, 44 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 6c57cc72d627..092c49552ddd 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -588,7 +588,7 @@ static int context_init(struct drm_device *dev, struct drm_file *file) msm_submitqueue_init(dev, ctx); - ctx->aspace = priv->gpu ? priv->gpu->aspace : NULL; + ctx->aspace = msm_gpu_address_space_instance(priv->gpu); file->driver_priv = ctx; return 0; @@ -607,6 +607,8 @@ static int msm_open(struct drm_device *dev, struct drm_file *file) static void context_close(struct msm_file_private *ctx) { msm_submitqueue_close(ctx); + + msm_gem_address_space_put(ctx->aspace); kfree(ctx); } @@ -771,18 +773,19 @@ static int msm_ioctl_gem_cpu_fini(struct drm_device *dev, void *data, } static int msm_ioctl_gem_info_iova(struct drm_device *dev, - struct drm_gem_object *obj, uint64_t *iova) + struct drm_file *file, struct drm_gem_object *obj, + uint64_t *iova) { - struct msm_drm_private *priv = dev->dev_private; + struct msm_file_private *ctx = file->driver_priv; - if (!priv->gpu) + if (!ctx->aspace) return -EINVAL; /* * Don't pin the memory here - just get an address so that userspace can * be productive */ - return msm_gem_get_iova(obj, priv->gpu->aspace, iova); + return msm_gem_get_iova(obj, ctx->aspace, iova); } static int msm_ioctl_gem_info(struct drm_device *dev, void *data, @@ -821,7 +824,7 @@ static int msm_ioctl_gem_info(struct drm_device *dev, void *data, args->value = msm_gem_mmap_offset(obj); break; case MSM_INFO_GET_IOVA: - ret = msm_ioctl_gem_info_iova(dev, obj, &args->value); + ret = msm_ioctl_gem_info_iova(dev, file, obj, &args->value); break; case MSM_INFO_SET_NAME: /* length check should leave room for terminating null: */ diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h index e2d6a6056418..983a8b7e5a74 100644 --- a/drivers/gpu/drm/msm/msm_drv.h +++ b/drivers/gpu/drm/msm/msm_drv.h @@ -249,6 +249,10 @@ int msm_gem_map_vma(struct msm_gem_address_space *aspace, void msm_gem_close_vma(struct msm_gem_address_space *aspace, struct msm_gem_vma *vma); + +struct msm_gem_address_space * +msm_gem_address_space_get(struct msm_gem_address_space *aspace); + void msm_gem_address_space_put(struct msm_gem_address_space *aspace); struct msm_gem_address_space * diff --git a/drivers/gpu/drm/msm/msm_gem_vma.c b/drivers/gpu/drm/msm/msm_gem_vma.c index 5f6a11211b64..29cc1305cf37 100644 --- a/drivers/gpu/drm/msm/msm_gem_vma.c +++ b/drivers/gpu/drm/msm/msm_gem_vma.c @@ -27,6 +27,15 @@ void msm_gem_address_space_put(struct msm_gem_address_space *aspace) kref_put(&aspace->kref, msm_gem_address_space_destroy); } +struct msm_gem_address_space * +msm_gem_address_space_get(struct msm_gem_address_space *aspace) +{ + if (!IS_ERR_OR_NULL(aspace)) + kref_get(&aspace->kref); + + return aspace; +} + /* Actually unmap memory for the vma */ void msm_gem_purge_vma(struct msm_gem_address_space *aspace, struct msm_gem_vma *vma) diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c index 86a138641477..0fa614430799 100644 --- a/drivers/gpu/drm/msm/msm_gpu.c +++ b/drivers/gpu/drm/msm/msm_gpu.c @@ -821,6 +821,23 @@ static int get_clocks(struct platform_device *pdev, struct msm_gpu *gpu) return 0; } +/* Return a new address space instance */ +struct msm_gem_address_space * +msm_gpu_address_space_instance(struct msm_gpu *gpu) +{ + if (!gpu) + return NULL; + + /* + * If the GPU doesn't support instanced address spaces return the + * default address space + */ + if (!gpu->funcs->address_space_instance) + return msm_gem_address_space_get(gpu->aspace); + + return gpu->funcs->address_space_instance(gpu); +} + int msm_gpu_init(struct drm_device *drm, struct platform_device *pdev, struct msm_gpu *gpu, const struct msm_gpu_funcs *funcs, const char *name, struct msm_gpu_config *config) diff --git a/drivers/gpu/drm/msm/msm_gpu.h b/drivers/gpu/drm/msm/msm_gpu.h index 429cb40f7931..f1762b77bea8 100644 --- a/drivers/gpu/drm/msm/msm_gpu.h +++ b/drivers/gpu/drm/msm/msm_gpu.h @@ -64,6 +64,8 @@ struct msm_gpu_funcs { void (*gpu_set_freq)(struct msm_gpu *gpu, unsigned long freq); struct msm_gem_address_space *(*create_address_space) (struct msm_gpu *gpu, struct platform_device *pdev); + struct msm_gem_address_space *(*address_space_instance) + (struct msm_gpu *gpu); }; struct msm_gpu { @@ -286,6 +288,9 @@ int msm_gpu_init(struct drm_device *drm, struct platform_device *pdev, struct msm_gpu *gpu, const struct msm_gpu_funcs *funcs, const char *name, struct msm_gpu_config *config); +struct msm_gem_address_space * +msm_gpu_address_space_instance(struct msm_gpu *gpu); + void msm_gpu_cleanup(struct msm_gpu *gpu); struct msm_gpu *adreno_load_gpu(struct drm_device *dev); -- 2.17.1 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu