From mboxrd@z Thu Jan 1 00:00:00 1970 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id EC284C433F5 for ; Mon, 11 Apr 2022 04:46:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244635AbiDKEtG (ORCPT ); Mon, 11 Apr 2022 00:49:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49174 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S244150AbiDKEs4 (ORCPT ); Mon, 11 Apr 2022 00:48:56 -0400 Received: from wout1-smtp.messagingengine.com (wout1-smtp.messagingengine.com [64.147.123.24]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1485F35ABE; Sun, 10 Apr 2022 21:46:43 -0700 (PDT) Received: from compute3.internal (compute3.nyi.internal [10.202.2.43]) by mailout.west.internal (Postfix) with ESMTP id B8F403200993; Mon, 11 Apr 2022 00:46:41 -0400 (EDT) Received: from mailfrontend2 ([10.202.2.163]) by compute3.internal (MEProxy); Mon, 11 Apr 2022 00:46:42 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sholland.org; h= cc:cc:content-transfer-encoding:date:date:from:from:in-reply-to :in-reply-to:message-id:mime-version:references:reply-to:sender :subject:subject:to:to; s=fm2; t=1649652401; x=1649738801; bh=mB +nLCZ+L9sywRzCC2aZPrLE0+qzIdPX9BHY90NKeFs=; b=X0n6WLnlSy1Fsem0KT Ftu/US7pYvSd7gNGQ3OYU46BQqY/JrdWULtCwwGvPu5OfIPw19PX83MFEWUfSdQ/ rEquZShmvuEYuNeJiuzWgha2LXajZ4voBWARWF0/F9nNcXd31OTqtnogaW0HKdgU dNM4OAzOi5fA/wcuqOPFQ3qd9kUQhm+ILC5CaSwF0j7S6TXEUtaLZNtZMQiGYzEF MGxrynkRz9Tfydccj79FQZNj/MLXjfSJVyu8AbHW8iWAfOMoFTlVh1PZNmCJITSp BZqm9UBvDE1cM36gqszIB9RCvd4INhBXws8PorS9NOv9C3+L6kbpIdHDlAnXOI7h eq7w== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-transfer-encoding:date:date :from:from:in-reply-to:in-reply-to:message-id:mime-version :references:reply-to:sender:subject:subject:to:to:x-me-proxy :x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s=fm3; t= 1649652401; x=1649738801; bh=mB+nLCZ+L9sywRzCC2aZPrLE0+qzIdPX9BH Y90NKeFs=; b=mH2xC6SDexAJ+IYea8WxPjkDleOF9cZbDGw2wAbzxf1BTZxwb2o zh2Vyh+ZplTG1e123ptFuxzUNxAPsPsSsTqZGu+pbiaezeLr2rJyb1EGsZhO/kcg 9KwaPAF8b3etiXQua3gfClCZvXXl+02P1R1dnvk5n7ALwmLTPotLw4xchaQ0fbrR oTX/Xt7ARgvbh5S5fwtu9prliXPxaMIaSz/YkEy4bDrbQXGQDGIEUlx9xPKXvD2D BWAQpL7Gw/Ao6WXjW0D/YNwLB/t45NZZbaSj5hbhyhMRRZ6NjkTcws+CdZ+Jidls WOhaqnJ//F//pytWOrmeb8Elt1Mv/oiTggA== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvvddrudekhedgkedvucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhephffvufffkffojghfggfgsedtkeertdertddtnecuhfhrohhmpefurghmuhgv lhcujfholhhlrghnugcuoehsrghmuhgvlhesshhhohhllhgrnhgurdhorhhgqeenucggtf frrghtthgvrhhnpeduhfejfedvhffgfeehtefghfeiiefgfeehgfdvvdevfeegjeehjedv gfejheeuieenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepmhgrihhlfhhroh hmpehsrghmuhgvlhesshhhohhllhgrnhgurdhorhhg X-ME-Proxy: Received: by mail.messagingengine.com (Postfix) with ESMTPA; Mon, 11 Apr 2022 00:46:40 -0400 (EDT) From: Samuel Holland To: Vinod Koul , dmaengine@vger.kernel.org Cc: Samuel Holland , Chen-Yu Tsai , Jernej Skrabec , Krzysztof Kozlowski , Maxime Ripard , Rob Herring , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-sunxi@lists.linux.dev, Maxime Ripard Subject: [PATCH v2 2/4] dmaengine: sun6i: Do not use virt_to_phys Date: Sun, 10 Apr 2022 23:46:30 -0500 Message-Id: <20220411044633.39014-3-samuel@sholland.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220411044633.39014-1-samuel@sholland.org> References: <20220411044633.39014-1-samuel@sholland.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This breaks on RISC-V, because dma_pool_alloc returns addresses which are not in the linear map. Instead, plumb through the physical address which is already known anyway. Acked-by: Maxime Ripard Signed-off-by: Samuel Holland --- (no changes since v1) drivers/dma/sun6i-dma.c | 38 +++++++++++++++++++------------------- 1 file changed, 19 insertions(+), 19 deletions(-) diff --git a/drivers/dma/sun6i-dma.c b/drivers/dma/sun6i-dma.c index 5cadd4d2b824..a9334f969b28 100644 --- a/drivers/dma/sun6i-dma.c +++ b/drivers/dma/sun6i-dma.c @@ -241,9 +241,7 @@ static inline void sun6i_dma_dump_com_regs(struct sun6i_dma_dev *sdev) static inline void sun6i_dma_dump_chan_regs(struct sun6i_dma_dev *sdev, struct sun6i_pchan *pchan) { - phys_addr_t reg = virt_to_phys(pchan->base); - - dev_dbg(sdev->slave.dev, "Chan %d reg: %pa\n" + dev_dbg(sdev->slave.dev, "Chan %d reg: 0x%lx\n" "\t___en(%04x): \t0x%08x\n" "\tpause(%04x): \t0x%08x\n" "\tstart(%04x): \t0x%08x\n" @@ -252,7 +250,7 @@ static inline void sun6i_dma_dump_chan_regs(struct sun6i_dma_dev *sdev, "\t__dst(%04x): \t0x%08x\n" "\tcount(%04x): \t0x%08x\n" "\t_para(%04x): \t0x%08x\n\n", - pchan->idx, ®, + pchan->idx, pchan->base - sdev->base, DMA_CHAN_ENABLE, readl(pchan->base + DMA_CHAN_ENABLE), DMA_CHAN_PAUSE, @@ -385,17 +383,16 @@ static void *sun6i_dma_lli_add(struct sun6i_dma_lli *prev, } static inline void sun6i_dma_dump_lli(struct sun6i_vchan *vchan, - struct sun6i_dma_lli *lli) + struct sun6i_dma_lli *v_lli, + dma_addr_t p_lli) { - phys_addr_t p_lli = virt_to_phys(lli); - dev_dbg(chan2dev(&vchan->vc.chan), - "\n\tdesc: p - %pa v - 0x%p\n" + "\n\tdesc:\tp - %pad v - 0x%p\n" "\t\tc - 0x%08x s - 0x%08x d - 0x%08x\n" "\t\tl - 0x%08x p - 0x%08x n - 0x%08x\n", - &p_lli, lli, - lli->cfg, lli->src, lli->dst, - lli->len, lli->para, lli->p_lli_next); + &p_lli, v_lli, + v_lli->cfg, v_lli->src, v_lli->dst, + v_lli->len, v_lli->para, v_lli->p_lli_next); } static void sun6i_dma_free_desc(struct virt_dma_desc *vd) @@ -445,7 +442,7 @@ static int sun6i_dma_start_desc(struct sun6i_vchan *vchan) pchan->desc = to_sun6i_desc(&desc->tx); pchan->done = NULL; - sun6i_dma_dump_lli(vchan, pchan->desc->v_lli); + sun6i_dma_dump_lli(vchan, pchan->desc->v_lli, pchan->desc->p_lli); irq_reg = pchan->idx / DMA_IRQ_CHAN_NR; irq_offset = pchan->idx % DMA_IRQ_CHAN_NR; @@ -670,7 +667,7 @@ static struct dma_async_tx_descriptor *sun6i_dma_prep_dma_memcpy( sun6i_dma_lli_add(NULL, v_lli, p_lli, txd); - sun6i_dma_dump_lli(vchan, v_lli); + sun6i_dma_dump_lli(vchan, v_lli, p_lli); return vchan_tx_prep(&vchan->vc, &txd->vd, flags); @@ -746,14 +743,16 @@ static struct dma_async_tx_descriptor *sun6i_dma_prep_slave_sg( } dev_dbg(chan2dev(chan), "First: %pad\n", &txd->p_lli); - for (prev = txd->v_lli; prev; prev = prev->v_lli_next) - sun6i_dma_dump_lli(vchan, prev); + for (p_lli = txd->p_lli, v_lli = txd->v_lli; v_lli; + p_lli = v_lli->p_lli_next, v_lli = v_lli->v_lli_next) + sun6i_dma_dump_lli(vchan, v_lli, p_lli); return vchan_tx_prep(&vchan->vc, &txd->vd, flags); err_lli_free: - for (prev = txd->v_lli; prev; prev = prev->v_lli_next) - dma_pool_free(sdev->pool, prev, virt_to_phys(prev)); + for (p_lli = txd->p_lli, v_lli = txd->v_lli; v_lli; + p_lli = v_lli->p_lli_next, v_lli = v_lli->v_lli_next) + dma_pool_free(sdev->pool, v_lli, p_lli); kfree(txd); return NULL; } @@ -820,8 +819,9 @@ static struct dma_async_tx_descriptor *sun6i_dma_prep_dma_cyclic( return vchan_tx_prep(&vchan->vc, &txd->vd, flags); err_lli_free: - for (prev = txd->v_lli; prev; prev = prev->v_lli_next) - dma_pool_free(sdev->pool, prev, virt_to_phys(prev)); + for (p_lli = txd->p_lli, v_lli = txd->v_lli; v_lli; + p_lli = v_lli->p_lli_next, v_lli = v_lli->v_lli_next) + dma_pool_free(sdev->pool, v_lli, p_lli); kfree(txd); return NULL; } -- 2.35.1