From patchwork Mon Mar 20 10:09:03 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Nirmoy Das X-Patchwork-Id: 13180901 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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1B669C7618A for ; Mon, 20 Mar 2023 10:09:29 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id E1F9B10E317; Mon, 20 Mar 2023 10:09:17 +0000 (UTC) Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by gabe.freedesktop.org (Postfix) with ESMTPS id 36EEF10E2E1; Mon, 20 Mar 2023 10:09:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1679306956; x=1710842956; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=h6POoj5dy4TdUZccoApFlvGuD/CzgiS3gfJ9WJCVn1s=; b=a/slCxFvw+VqA8IR7yfTVg8hm9jNzBt0egPf6g/p1LTXHaKNb/5Fzubs TNXNz3d0KNMu33m/Piyi2Qrzg0rQKoOwzapRG9zV0ayL2z6mSJDTb1mCf zTbWCq4YJfHVPl/EE5SlgzUCu4kkjs7DmUDHIeiJ2oaeWQLWcw3cTcDFj AErLGWyFTkmF9hxSPZyhSZf52ipq6hNr+/F+I6zNle32KQe4RQmVgSDNW qBj1aMk/FSvPsQRNWUNCsrVXG3vPb3RmYaFeRtx0wRaN0s17+2e0dYU/N qZqM9qKYQlpFgccXgr6v/KNUygTZ37mFR5SYHukrUzSUWOqpHRldzGDrH A==; X-IronPort-AV: E=McAfee;i="6600,9927,10654"; a="338647860" X-IronPort-AV: E=Sophos;i="5.98,274,1673942400"; d="scan'208";a="338647860" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Mar 2023 03:09:16 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10654"; a="791560732" X-IronPort-AV: E=Sophos;i="5.98,274,1673942400"; d="scan'208";a="791560732" Received: from nirmoyda-desk.igk.intel.com ([10.91.214.27]) by fmsmga002-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Mar 2023 03:09:14 -0700 From: Nirmoy Das To: intel-gfx@lists.freedesktop.org Subject: [PATCH RFC 3/3] drm/i915/display: Implement fb_mmap callback function Date: Mon, 20 Mar 2023 11:09:03 +0100 Message-Id: <20230320100903.23588-3-nirmoy.das@intel.com> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230320100903.23588-1-nirmoy.das@intel.com> References: <20230320100903.23588-1-nirmoy.das@intel.com> MIME-Version: 1.0 Organization: Intel Deutschland GmbH, Registered Address: Am Campeon 10, 85579 Neubiberg, Germany, Commercial Register: Amtsgericht Muenchen HRB 186928 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jani Nikula , dri-devel@lists.freedesktop.org, Matthew Auld , Andi Shyti , Nirmoy Das Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" If stolen memory allocation fails for fbdev, the driver will fallback to system memory. Calculation of smem_start is wrong for such framebuffer objs if the platform comes with no gmadr or no aperture. Solve this by adding fb_mmap callback which will use GTT if aperture is available otherwise will use cpu to access the framebuffer. v2: Use to_intel_fbdev() function(Jani) Cc: Matthew Auld Cc: Andi Shyti Cc: Ville Syrjälä Cc: Jani Nikula Cc: Imre Deak Signed-off-by: Nirmoy Das Reviewed-by: Andi Shyti Reviewed-by: Andrzej Hajda --- drivers/gpu/drm/i915/display/intel_fbdev.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_fbdev.c b/drivers/gpu/drm/i915/display/intel_fbdev.c index 8c3b3c3fd0e0..5e52bef868a0 100644 --- a/drivers/gpu/drm/i915/display/intel_fbdev.c +++ b/drivers/gpu/drm/i915/display/intel_fbdev.c @@ -40,8 +40,10 @@ #include #include #include +#include #include "gem/i915_gem_lmem.h" +#include "gem/i915_gem_mman.h" #include "i915_drv.h" #include "intel_display_types.h" @@ -119,6 +121,15 @@ static int intel_fbdev_pan_display(struct fb_var_screeninfo *var, return ret; } +static int intel_fbdev_mmap(struct fb_info *info, struct vm_area_struct *vma) +{ + struct intel_fbdev *fbdev = to_intel_fbdev(info->par); + struct drm_gem_object *bo = drm_gem_fb_get_obj(&fbdev->fb->base, 0); + struct drm_i915_gem_object *obj = to_intel_bo(bo); + + return i915_gem_fb_mmap(obj, vma); +} + static const struct fb_ops intelfb_ops = { .owner = THIS_MODULE, DRM_FB_HELPER_DEFAULT_OPS, @@ -130,6 +141,7 @@ static const struct fb_ops intelfb_ops = { .fb_imageblit = drm_fb_helper_cfb_imageblit, .fb_pan_display = intel_fbdev_pan_display, .fb_blank = intel_fbdev_blank, + .fb_mmap = intel_fbdev_mmap, }; static int intelfb_alloc(struct drm_fb_helper *helper,