From patchwork Fri May 20 18:11:34 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenzo Bianconi X-Patchwork-Id: 574662 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 69B8BC43219 for ; Fri, 20 May 2022 18:13:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242811AbiETSNM (ORCPT ); Fri, 20 May 2022 14:13:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36542 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1352470AbiETSNE (ORCPT ); Fri, 20 May 2022 14:13:04 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BC7AE18FF01; Fri, 20 May 2022 11:12:56 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 788AEB82D93; Fri, 20 May 2022 18:12:55 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 60E3CC34117; Fri, 20 May 2022 18:12:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1653070374; bh=jFr/C+je3NokkqyXC7uJY0JiG6vYtPSvT2wCEXT3pnc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RMp3FfJHzDDvYejKvhgrI5W11mOFuK37cKFiNHYES5trjqGFFkXFqUwJZ+9kl/eZn zsSxvN+UPifjI5zJmjufHgN/Cqq3y70m44zR9p/NVc6sy9746qELUEYO7EfkZNjNLG PiiUASaaC0ngZPH6UxKqVyTjnqtZLKZm+pjDa1V9oo6ZY3B7u8GeQSgpHSDKeDR6jB 1ph+9HHGko7znyTsu2bStguFFY1goK+fn0BRej2OqD3Wme81FSFlYF/5WCRRGcq24L 4lrbCNe6igSTNSLkZzpcdVsoB/qfq5opoZGbn51tSZLXXax3oIAGFvqM4gkruMtwW3 5OKKSOiZpiQWA== From: Lorenzo Bianconi To: netdev@vger.kernel.org Cc: nbd@nbd.name, john@phrozen.org, sean.wang@mediatek.com, Mark-MC.Lee@mediatek.com, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, Sam.Shih@mediatek.com, linux-mediatek@lists.infradead.org, devicetree@vger.kernel.org, robh@kernel.org, lorenzo.bianconi@redhat.com Subject: [PATCH v3 net-next 11/16] net: ethernet: mtk_eth_soc: rely on rxd_size field in mtk_rx_alloc/mtk_rx_clean Date: Fri, 20 May 2022 20:11:34 +0200 Message-Id: <1be6a4f04eca440c610a9f22808cfd4062d1c096.1653069056.git.lorenzo@kernel.org> X-Mailer: git-send-email 2.35.3 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Remove mtk_rx_dma structure layout dependency in mtk_rx_alloc/mtk_rx_clean. Initialize to 0 rxd3 and rxd4 in mtk_rx_alloc. This is a preliminary patch to add mt7986 ethernet support. Tested-by: Sam Shih Signed-off-by: Lorenzo Bianconi --- drivers/net/ethernet/mediatek/mtk_eth_soc.c | 26 ++++++++++++++------- 1 file changed, 18 insertions(+), 8 deletions(-) diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index c7820dbc75f1..4706e3708bbc 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -1749,18 +1749,25 @@ static int mtk_rx_alloc(struct mtk_eth *eth, int ring_no, int rx_flag) return -ENOMEM; for (i = 0; i < rx_dma_size; i++) { + struct mtk_rx_dma *rxd; + dma_addr_t dma_addr = dma_map_single(eth->dma_dev, ring->data[i] + NET_SKB_PAD + eth->ip_align, ring->buf_size, DMA_FROM_DEVICE); if (unlikely(dma_mapping_error(eth->dma_dev, dma_addr))) return -ENOMEM; - ring->dma[i].rxd1 = (unsigned int)dma_addr; + + rxd = (void *)ring->dma + i * eth->soc->txrx.rxd_size; + rxd->rxd1 = (unsigned int)dma_addr; if (MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628)) - ring->dma[i].rxd2 = RX_DMA_LSO; + rxd->rxd2 = RX_DMA_LSO; else - ring->dma[i].rxd2 = RX_DMA_PLEN0(ring->buf_size); + rxd->rxd2 = RX_DMA_PLEN0(ring->buf_size); + + rxd->rxd3 = 0; + rxd->rxd4 = 0; } ring->dma_size = rx_dma_size; ring->calc_idx_update = false; @@ -1785,14 +1792,17 @@ static void mtk_rx_clean(struct mtk_eth *eth, struct mtk_rx_ring *ring) if (ring->data && ring->dma) { for (i = 0; i < ring->dma_size; i++) { + struct mtk_rx_dma *rxd; + if (!ring->data[i]) continue; - if (!ring->dma[i].rxd1) + + rxd = (void *)ring->dma + i * eth->soc->txrx.rxd_size; + if (!rxd->rxd1) continue; - dma_unmap_single(eth->dma_dev, - ring->dma[i].rxd1, - ring->buf_size, - DMA_FROM_DEVICE); + + dma_unmap_single(eth->dma_dev, rxd->rxd1, + ring->buf_size, DMA_FROM_DEVICE); skb_free_frag(ring->data[i]); } kfree(ring->data);