From patchwork Tue Mar 7 14:46:52 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nirmoy Das X-Patchwork-Id: 13163844 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 47F41C6FD1A for ; Tue, 7 Mar 2023 14:47:07 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6E19E10E4CC; Tue, 7 Mar 2023 14:47:03 +0000 (UTC) Received: from mga06.intel.com (mga06b.intel.com [134.134.136.31]) by gabe.freedesktop.org (Postfix) with ESMTPS id C7F2E10E4C7 for ; Tue, 7 Mar 2023 14:47:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1678200420; x=1709736420; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=y6nZuNSe6JJw6StAUePz5G9q9pXP+5YIZTT3TFS2s9g=; b=IMQQJ4VCVl6uhkNENVnkKQt5QSiutPeQGUXVFG6Ebsocn3Sh62oiPamx GxErFE5Sb5/C/XX0iR6E08iO/QlTHYflDEyRtPQk9pWYp0Nqlvf/Btqxl 1w4YluOApNZ5pyW44AdiWgoVfOK3CQAPEo1/sWPmCTkaQYCTWW4wU/4hf oaRJnUdwRDnDSmncdGjDXMLB049kW3KKNQ0WcHpbhj/hgtvtQyoZugz6K bJfKJRpfSPn6+UHV9sFgd3posjsYXjYeQxmqeqp+tXqWV2KCQfTVDc1u8 nBy4pHWenUsE9yIVuy8hK9d1u6Dbo8dB7+oKRpdU34fTIBqilNq0pipHs A==; X-IronPort-AV: E=McAfee;i="6500,9779,10642"; a="398444236" X-IronPort-AV: E=Sophos;i="5.98,241,1673942400"; d="scan'208";a="398444236" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Mar 2023 06:47:00 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10642"; a="740748689" X-IronPort-AV: E=Sophos;i="5.98,241,1673942400"; d="scan'208";a="740748689" Received: from nirmoyda-desk.igk.intel.com ([10.102.42.231]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Mar 2023 06:46:59 -0800 From: Nirmoy Das To: intel-gfx@lists.freedesktop.org Date: Tue, 7 Mar 2023 15:46:52 +0100 Message-Id: <20230307144652.17595-2-nirmoy.das@intel.com> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230307144652.17595-1-nirmoy.das@intel.com> References: <20230307144652.17595-1-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 Subject: [Intel-gfx] [RFC PATCH 2/2] drm/i915/display: Implement fb_mmap callback function X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: matthew.auld@intel.com, Nirmoy Das Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" 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. Signed-off-by: Nirmoy Das --- drivers/gpu/drm/i915/display/intel_fbdev.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_fbdev.c b/drivers/gpu/drm/i915/display/intel_fbdev.c index 3659350061a7..67427d020bd3 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" @@ -120,6 +122,16 @@ static int intel_fbdev_pan_display(struct fb_var_screeninfo *var, return ret; } +#define to_intel_fbdev(x) container_of(x, struct intel_fbdev, helper) +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, @@ -131,6 +143,7 @@ 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,