From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Mon, 31 May 2021 09:40:59 +0200 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by lore.white.stw.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1lncXj-0003Cu-GR for lore@lore.pengutronix.de; Mon, 31 May 2021 09:40:59 +0200 Received: from bombadil.infradead.org ([2607:7c80:54:e::133]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lncXg-0000us-SC for lore@pengutronix.de; Mon, 31 May 2021 09:40:59 +0200 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=+J9dvGVL0/RQPnfYutMMLF4jBA6RHdyJwRVEmsxsJL8=; b=XYtXE1sNbs2ysC n4SnplWQKRshBmpP/k8GUDpXEcVZgdmtBdpY1P6FJWlpAmwXelZUI8nIosK9MbQTyoos3OsZsN93W XbelCv4zQo5+7eb3R5BqbeqRUIMaU5jTxXG591Ad7CpHEG20LwTWKIQEEcHjmY7K/Yg07nKiBElIV Sbfmrd5Y6w0fy867NFrSqQUQ1IZR5CgaZyVya1KvtYgEEe3vIjjqI1ojkVhP4XxUD6EtDNbXqqm8R u5IQkNN1b2B5M1GNAVNzZjbsLousC06f7DPesYiFla8u/HwfZFQDcqbLvrEpOPpNuVeXZo+X8hnHL Z5p1neG+WF2Xm8NUidMw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1lncWL-00BDGk-9I; Mon, 31 May 2021 07:39:33 +0000 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1lncVN-00BChr-Sa for barebox@lists.infradead.org; Mon, 31 May 2021 07:38:35 +0000 Received: from dude.hi.pengutronix.de ([2001:67c:670:100:1d::7]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lncVE-00080P-GF; Mon, 31 May 2021 09:38:24 +0200 Received: from afa by dude.hi.pengutronix.de with local (Exim 4.92) (envelope-from ) id 1lncVD-00046E-4F; Mon, 31 May 2021 09:38:23 +0200 From: Ahmad Fatoum To: barebox@lists.infradead.org Cc: Ahmad Fatoum Date: Mon, 31 May 2021 09:38:15 +0200 Message-Id: <20210531073821.15257-15-a.fatoum@pengutronix.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210531073821.15257-1-a.fatoum@pengutronix.de> References: <20210531073821.15257-1-a.fatoum@pengutronix.de> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210531_003834_032621_AC7B988B X-CRM114-Status: GOOD ( 10.88 ) X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:e::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.ext.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-4.6 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH 14/20] dma: allocate 32-byte aligned buffers by default X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.ext.pengutronix.de) If dma_alloc() is really used for streaming-dma between cache-incoherent masters, it should return cache-line aligned buffers, so we don't risk invalidating shared cache lines. Bump up the default alignment to 32-bytes. This doesn't affect ARM, as it defines its own implementation with 64-byte buffers. Signed-off-by: Ahmad Fatoum --- include/dma.h | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/include/dma.h b/include/dma.h index 1b1cb3a40796..90f9254ea80f 100644 --- a/include/dma.h +++ b/include/dma.h @@ -8,6 +8,7 @@ #include #include +#include #include #include @@ -15,10 +16,14 @@ #define DMA_ADDRESS_BROKEN NULL +#ifndef DMA_ALIGNMENT +#define DMA_ALIGNMENT 32 +#endif + #ifndef dma_alloc static inline void *dma_alloc(size_t size) { - return xmalloc(size); + return xmemalign(DMA_ALIGNMENT, ALIGN(size, DMA_ALIGNMENT)); } #endif -- 2.29.2 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox