From patchwork Wed May 17 14:52:35 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexandre Bailon X-Patchwork-Id: 683572 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D34E2C7EE32 for ; Wed, 17 May 2023 14:53:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232222AbjEQOw7 (ORCPT ); Wed, 17 May 2023 10:52:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44840 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232210AbjEQOw6 (ORCPT ); Wed, 17 May 2023 10:52:58 -0400 Received: from mail-wr1-x42c.google.com (mail-wr1-x42c.google.com [IPv6:2a00:1450:4864:20::42c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D82258682 for ; Wed, 17 May 2023 07:52:50 -0700 (PDT) Received: by mail-wr1-x42c.google.com with SMTP id ffacd0b85a97d-30644c18072so595893f8f.2 for ; Wed, 17 May 2023 07:52:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20221208.gappssmtp.com; s=20221208; t=1684335169; x=1686927169; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=ChL28icQVyizqOaIAH3gAMzq5UZ5InLkC1WcC+s6530=; b=iG7od/evTKtot/nJm1gK/1OL6Lc2v1Bmw9HJrvZNepXY3d+ijpP+DWiwPAyVpH4pE1 whGLUhjKSF4oMqvwtGaC3U7qu0JGLJf2iHcaZHG/KUWeDATqb+7kMGgK4oAbo+BiDQwI jpxA3KkT4mge9b6qQfuW6PavzHMyngFUeL5rUs8wtlXokzk0Gl/ytdd5BZqb0/1Z5e/Y cIV4AMhkBECqg1zNTCLE/3Y42tLbWIq2Tz99acBQU/rwUfG6htIKFOBvud87i13WKEpC cNz6RrsgVyoegDNgLU4Dj6l4jtXBZeukG92pSorCCUG0L5/O72DQRlJqUtdW4XruFu5P MPxg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1684335169; x=1686927169; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=ChL28icQVyizqOaIAH3gAMzq5UZ5InLkC1WcC+s6530=; b=aRu6iuEcS3c+sxqz/09WLTW+WUUKUqgJlpXnuSiACYoEDvJ8HbihsdVaw4YjXGQf3X iL5v6HxwKbaYEqd6Nw9jr1lnG8+2neaajOooNvs5grRfV00KOi8Rbv/ZXn4NDe1dv+qi +SG7OaAlDzYbMFem3Y9vbSPQ4i+G9SrixXnc52KZgVp8JYjCH180hilYfZQ8LhOltM9g UKEy9gtcop/oyTjthUYuTscZuyDPJKB094J00MOR/ubZE/zpzftwcSdh6UAvuvkgM2m0 GNJTHCkzc24BQVAbVk9sFwgmVDlL3wfaYwwBVDE6JnhNbWcqAGnzO46IvaAZgwRi3jG+ gIXQ== X-Gm-Message-State: AC+VfDzY6fr0zy+mj0QViYq/fHutXbzFfdLUdP2BcYVbv8jHiVVrVnL5 zAamuHu2Xf+oIDnoRDDFe0LXqw== X-Google-Smtp-Source: ACHHUZ5uCAqHjUKdV/6t3weODX6sjiburDexUUIvFFfFHhqo6Yq6iD6TS/qXA3nyRGAEZJG5rutnCQ== X-Received: by 2002:a5d:4cc9:0:b0:2fb:7099:6070 with SMTP id c9-20020a5d4cc9000000b002fb70996070mr839383wrt.47.1684335169252; Wed, 17 May 2023 07:52:49 -0700 (PDT) Received: from blaptop.baylibre (laubervilliers-658-1-213-31.w90-63.abo.wanadoo.fr. [90.63.244.31]) by smtp.gmail.com with ESMTPSA id v11-20020a5d678b000000b002f7780eee10sm2979098wru.59.2023.05.17.07.52.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 17 May 2023 07:52:48 -0700 (PDT) From: Alexandre Bailon To: airlied@gmail.com, daniel@ffwll.ch, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de Cc: robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com, sumit.semwal@linaro.org, christian.koenig@amd.com, jstephan@baylibre.com, dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-media@vger.kernel.org, linaro-mm-sig@lists.linaro.org, khilman@baylibre.com, nbelin@baylibre.com, bero@baylibre.com Subject: [PATCH 5/7] drm/apu: allow platform driver to implement their own mmap function Date: Wed, 17 May 2023 16:52:35 +0200 Message-Id: <20230517145237.295461-6-abailon@baylibre.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230517145237.295461-1-abailon@baylibre.com> References: <20230517145237.295461-1-abailon@baylibre.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org From: Julien Stephan By default we will call drm_gem_mmap() unless the apu driver has declared it's own mmap handler. Signed-off-by: Julien Stephan Reviewed-by: Julien Stephan --- drivers/gpu/drm/apu/apu_drv.c | 38 +++++++++++++++++++++++++++++- drivers/gpu/drm/apu/apu_internal.h | 2 ++ 2 files changed, 39 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/apu/apu_drv.c b/drivers/gpu/drm/apu/apu_drv.c index a0dce785a02a..703d4515f075 100644 --- a/drivers/gpu/drm/apu/apu_drv.c +++ b/drivers/gpu/drm/apu/apu_drv.c @@ -29,7 +29,20 @@ static const struct drm_ioctl_desc ioctls[] = { DRM_RENDER_ALLOW), }; -DEFINE_DRM_GEM_DMA_FOPS(apu_drm_ops); +static int apu_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma); + +static const struct file_operations apu_drm_ops = { + .owner = THIS_MODULE, + .open = drm_open, + .release = drm_release, + .unlocked_ioctl = drm_ioctl, + .compat_ioctl = drm_compat_ioctl, + .poll = drm_poll, + .read = drm_read, + .llseek = noop_llseek, + .mmap = apu_drm_gem_mmap, + DRM_GEM_DMA_UNMAPPED_AREA_FOPS +}; static struct drm_driver apu_drm_driver = { .driver_features = DRIVER_GEM | DRIVER_SYNCOBJ, @@ -45,6 +58,29 @@ static struct drm_driver apu_drm_driver = { DRM_GEM_DMA_DRIVER_OPS_WITH_DUMB_CREATE(drm_gem_dma_dumb_create), }; +/** + * apu_drm_gem_mmap() + * + * @filp: DRM file pointer + * @vma: VMA for the area to be mapped + * + * by default will call drm_gem_mmap() unless the apu driver has declared it's + * own mmap handler + * + */ +static int apu_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma) +{ + struct drm_file *priv = filp->private_data; + struct drm_device *dev = priv->minor->dev; + struct apu_drm *apu = dev->dev_private; + + if (apu->mmap) + return apu->mmap(filp, vma); + else + return drm_gem_mmap(filp, vma); +} + + /** * apu_dev_alloc() - Allocate a new APU device * diff --git a/drivers/gpu/drm/apu/apu_internal.h b/drivers/gpu/drm/apu/apu_internal.h index ea4183f3fb15..46e0b2be7821 100644 --- a/drivers/gpu/drm/apu/apu_internal.h +++ b/drivers/gpu/drm/apu/apu_internal.h @@ -45,6 +45,8 @@ struct apu_drm { struct iova_domain iovad; int iova_limit_pfn; + int (*mmap)(struct file *filp, struct vm_area_struct *vma); + struct list_head cores; struct list_head node;