From patchwork Tue Mar 15 18:04:42 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bob Beckett X-Patchwork-Id: 12781701 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 A5871C43217 for ; Tue, 15 Mar 2022 18:05:28 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 90E1910E494; Tue, 15 Mar 2022 18:05:17 +0000 (UTC) Received: from bhuna.collabora.co.uk (bhuna.collabora.co.uk [IPv6:2a00:1098:0:82:1000:25:2eeb:e3e3]) by gabe.freedesktop.org (Postfix) with ESMTPS id 057EE10E43E; Tue, 15 Mar 2022 18:05:11 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: bbeckett) with ESMTPSA id AFB961F430BF DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1647367509; bh=sv/7BhTnXU6OwO9t2oOn1ya2zRweojAD5yK19Y9oJaU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=KWQuk6MPHbAKO5FzGNeyNlRjlMXMJx9ygW1wM4ODTJQnqvFAtUVmAA77md3vmPiAZ 4Jz9gf2jApf32RWcb+GXbHeDnWrWc40dQOoh95XPSJYoollakbeM/cZ68+iboqTOWA Jq95cjGryzWLuSO7ry1sP+CIDurxFOIQ4V4HA7xqdgN3eCL3992dgdQ2a+hIJaW5/X GEFfzReBsMP4DwwgJYTVtBTfdkDSGVuuWKTMkCUE8lOl+s7tDCjbM604pjE3GvfauU JKwc+O/shZgc0xZJSdu644hZgIk1KJBR/wWkOv01KLptaAkFPysfHyPBuMWqpEEOgI 979RtP1a6pU1Q== From: Robert Beckett To: intel-gfx@lists.freedesktop.org, Christian Koenig , Huang Rui , David Airlie , Daniel Vetter Date: Tue, 15 Mar 2022 18:04:42 +0000 Message-Id: <20220315180444.3327283-6-bob.beckett@collabora.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220315180444.3327283-1-bob.beckett@collabora.com> References: <20220315180444.3327283-1-bob.beckett@collabora.com> MIME-Version: 1.0 Subject: [Intel-gfx] [RFC PATCH 5/7] drm/ttm: add range busy check for range manager 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: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" RFC: do we want this to become a generic interface in ttm_resource_manager_func? RFC: would we prefer a different interface? e.g. for_each_resource_in_range or for_each_bo_in_range Signed-off-by: Robert Beckett --- drivers/gpu/drm/ttm/ttm_range_manager.c | 21 +++++++++++++++++++++ include/drm/ttm/ttm_range_manager.h | 3 +++ 2 files changed, 24 insertions(+) diff --git a/drivers/gpu/drm/ttm/ttm_range_manager.c b/drivers/gpu/drm/ttm/ttm_range_manager.c index 8cd4f3fb9f79..5662627bb933 100644 --- a/drivers/gpu/drm/ttm/ttm_range_manager.c +++ b/drivers/gpu/drm/ttm/ttm_range_manager.c @@ -206,3 +206,24 @@ int ttm_range_man_fini_nocheck(struct ttm_device *bdev, return 0; } EXPORT_SYMBOL(ttm_range_man_fini_nocheck); + +/** + * ttm_range_man_range_busy - Check whether anything is allocated with a range + * + * @man: memory manager to check + * @fpfn: first page number to check + * @lpfn: last page number to check + * + * Return: true if anything allocated within the range, false otherwise. + */ +bool ttm_range_man_range_busy(struct ttm_resource_manager *man, + unsigned fpfn, unsigned lpfn) +{ + struct ttm_range_manager *rman = to_range_manager(man); + struct drm_mm *mm = &rman->mm; + + if (__drm_mm_interval_first(mm, PFN_PHYS(fpfn), PFN_PHYS(lpfn + 1) - 1)) + return true; + return false; +} +EXPORT_SYMBOL(ttm_range_man_range_busy); diff --git a/include/drm/ttm/ttm_range_manager.h b/include/drm/ttm/ttm_range_manager.h index 7963b957e9ef..86794a3f9101 100644 --- a/include/drm/ttm/ttm_range_manager.h +++ b/include/drm/ttm/ttm_range_manager.h @@ -53,4 +53,7 @@ static __always_inline int ttm_range_man_fini(struct ttm_device *bdev, BUILD_BUG_ON(__builtin_constant_p(type) && type >= TTM_NUM_MEM_TYPES); return ttm_range_man_fini_nocheck(bdev, type); } + +bool ttm_range_man_range_busy(struct ttm_resource_manager *man, + unsigned fpfn, unsigned lpfn); #endif