From patchwork Tue Nov 3 09:27:47 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Gleixner X-Patchwork-Id: 11876959 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=-6.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no 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 A389BC82600 for ; Tue, 3 Nov 2020 10:34:18 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 490132344C for ; Tue, 3 Nov 2020 10:34:18 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="Vi9y+RHz"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="YA2lOHqn" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 490132344C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linutronix.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B90A56EC56; Tue, 3 Nov 2020 10:34:17 +0000 (UTC) Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) by gabe.freedesktop.org (Postfix) with ESMTPS id 86C116EC79; Tue, 3 Nov 2020 10:34:16 +0000 (UTC) Message-Id: <20201103095900.158813457@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1604399647; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: references:references; bh=A3FdHqqNuzF3z/0IJSCiyvv2QQDa0OsdbIUscR1rN/Q=; b=Vi9y+RHz/u7318B+cqXyO0QOPlEr/gjlfn+MHQR6udcBs30/GV3fkr/dvBs0SdXzTqt8Vv IAeL/EsvoNuM0npj4K3u9xxlCyOA6DjplD94CEbFwEHSbeGyUzObif2rOtWpx16GZ2FaSV BFQeKovxHYQgdtDAgyF3ecey0ETZ5FDktyA4sKPZGPAmhVLw+ZE0IvGfmagwRzrtUJrhUk 4BWflcJOEUxnvEGr/U26JqZvGFMUquFdL90X9KjoNtecwkKjLqCwqpsSI1UKdOGeF1Mo4K JWrbecA4+rPlCbBF6yRLES8dEl5nqwwXKsLrQ6HzdsmD3u+xUHjLwf9HAaMsaA== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1604399647; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: references:references; bh=A3FdHqqNuzF3z/0IJSCiyvv2QQDa0OsdbIUscR1rN/Q=; b=YA2lOHqnjQm84xDc82K5Rmbii3lOSjdMhWJxq7WAnHE1z7PUvI9sl68g7t7UUaYnQOsgX5 vH/eTyN9dMzQJnAA== Date: Tue, 03 Nov 2020 10:27:47 +0100 From: Thomas Gleixner To: LKML References: <20201103092712.714480842@linutronix.de> MIME-Version: 1.0 Subject: [Intel-gfx] [patch V3 35/37] drm/nouveau/device: Replace io_mapping_map_atomic_wc() 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: Juri Lelli , linux-aio@kvack.org, Peter Zijlstra , nouveau@lists.freedesktop.org, Sebastian Andrzej Siewior , dri-devel@lists.freedesktop.org, virtualization@lists.linux-foundation.org, Ben Segall , linux-mm@kvack.org, Huang Rui , Paul Mackerras , Gerd Hoffmann , Daniel Bristot de Oliveira , sparclinux@vger.kernel.org, Vincent Chen , Christoph Hellwig , Arnd Bergmann , Max Filippov , Michael Ellerman , x86@kernel.org, Russell King , linux-csky@vger.kernel.org, Ingo Molnar , David Airlie , VMware Graphics , Ben Skeggs , Benjamin Herrenschmidt , Dave Airlie , linux-snps-arc@lists.infradead.org, Mel Gorman , linux-xtensa@linux-xtensa.org, Paul McKenney , intel-gfx@lists.freedesktop.org, Roland Scheidegger , Josef Bacik , Steven Rostedt , Linus Torvalds , Alexander Viro , spice-devel@lists.freedesktop.org, David Sterba , Dietmar Eggemann , linux-arm-kernel@lists.infradead.org, Chris Zankel , Michal Simek , Thomas Bogendoerfer , Nick Hu , Chris Mason , Vineet Gupta , linux-mips@vger.kernel.org, Christian Koenig , Benjamin LaHaise , linux-fsdevel@vger.kernel.org, Andrew Morton , linuxppc-dev@lists.ozlabs.org, "David S. Miller" , linux-btrfs@vger.kernel.org, Greentime Hu Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Neither fbmem_peek() nor fbmem_poke() require to disable pagefaults and preemption as a side effect of io_mapping_map_atomic_wc(). Use io_mapping_map_local_wc() instead. Signed-off-by: Thomas Gleixner Cc: Ben Skeggs Cc: David Airlie Cc: Daniel Vetter Cc: dri-devel@lists.freedesktop.org Cc: nouveau@lists.freedesktop.org --- V3: New patch --- drivers/gpu/drm/nouveau/nvkm/subdev/devinit/fbmem.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) --- a/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/fbmem.h +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/fbmem.h @@ -60,19 +60,19 @@ fbmem_fini(struct io_mapping *fb) static inline u32 fbmem_peek(struct io_mapping *fb, u32 off) { - u8 __iomem *p = io_mapping_map_atomic_wc(fb, off & PAGE_MASK); + u8 __iomem *p = io_mapping_map_local_wc(fb, off & PAGE_MASK); u32 val = ioread32(p + (off & ~PAGE_MASK)); - io_mapping_unmap_atomic(p); + io_mapping_unmap_local(p); return val; } static inline void fbmem_poke(struct io_mapping *fb, u32 off, u32 val) { - u8 __iomem *p = io_mapping_map_atomic_wc(fb, off & PAGE_MASK); + u8 __iomem *p = io_mapping_map_local_wc(fb, off & PAGE_MASK); iowrite32(val, p + (off & ~PAGE_MASK)); wmb(); - io_mapping_unmap_atomic(p); + io_mapping_unmap_local(p); } static inline bool