From patchwork Mon Sep 18 10:29:08 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenzo Bianconi X-Patchwork-Id: 724261 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 24F871F959; Mon, 18 Sep 2023 10:30:17 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 99E9EC433C7; Mon, 18 Sep 2023 10:30:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1695033017; bh=5rS22PfOS63kepWvydr81OXjCBhdsiTDMLnp9BJbb70=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ScGQRcRmtMi2gBX0CaB1sUAhNCvhZhM5SjCTKYBVrP70CUX7wqfVn3SAfmIh0SCa+ OlbUgqxclTX7+oRjMKaJ657ZocyiEjLmQXbscA2117DxxJGh8jkUtM6txDm+meOsch w2RCuMyCRvnjXWC2PnnV69vRGlEok/V54jvz+RZxMmgrw6s/dhvOE3L/Qq6NMpWFGK Sgayw1dmuGon9CY1Vob7yz559LWV62EkUtAD3F4/uVnzhghDaDYaLh2uBrwoNFLhqm X9Mk7KzoKCDEZ+z9o9Ny8wM6yUOzRgw11dwmrY1eHzbmpk+EkoCxEBKwqjHEh7pkXg k2yphMGy7VW9g== From: Lorenzo Bianconi To: netdev@vger.kernel.org Cc: lorenzo.bianconi@redhat.com, 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, daniel@makrotopia.org, linux-mediatek@lists.infradead.org, sujuan.chen@mediatek.com, horms@kernel.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, devicetree@vger.kernel.org Subject: [PATCH v2 net-next 06/17] net: ethernet: mtk_wed: introduce mtk_wed_buf structure Date: Mon, 18 Sep 2023 12:29:08 +0200 Message-ID: X-Mailer: git-send-email 2.41.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Introduce mtk_wed_buf structure to store both virtual and physical addresses allocated in mtk_wed_tx_buffer_alloc() routine. This is a preliminary patch to add WED support for MT7988 SoC since it relies on a different dma descriptor layout not storing page dma addresses. Co-developed-by: Sujuan Chen Signed-off-by: Sujuan Chen Signed-off-by: Lorenzo Bianconi --- drivers/net/ethernet/mediatek/mtk_wed.c | 12 ++++++------ include/linux/soc/mediatek/mtk_wed.h | 7 ++++++- 2 files changed, 12 insertions(+), 7 deletions(-) diff --git a/drivers/net/ethernet/mediatek/mtk_wed.c b/drivers/net/ethernet/mediatek/mtk_wed.c index f166d4f0b793..592e497984e3 100644 --- a/drivers/net/ethernet/mediatek/mtk_wed.c +++ b/drivers/net/ethernet/mediatek/mtk_wed.c @@ -300,9 +300,9 @@ mtk_wed_assign(struct mtk_wed_device *dev) static int mtk_wed_tx_buffer_alloc(struct mtk_wed_device *dev) { + struct mtk_wed_buf *page_list; struct mtk_wdma_desc *desc; dma_addr_t desc_phys; - void **page_list; int token = dev->wlan.token_start; int ring_size; int n_pages; @@ -343,7 +343,8 @@ mtk_wed_tx_buffer_alloc(struct mtk_wed_device *dev) return -ENOMEM; } - page_list[page_idx++] = page; + page_list[page_idx].p = page; + page_list[page_idx++].phy_addr = page_phys; dma_sync_single_for_cpu(dev->hw->dev, page_phys, PAGE_SIZE, DMA_BIDIRECTIONAL); @@ -387,8 +388,8 @@ mtk_wed_tx_buffer_alloc(struct mtk_wed_device *dev) static void mtk_wed_free_tx_buffer(struct mtk_wed_device *dev) { + struct mtk_wed_buf *page_list = dev->tx_buf_ring.pages; struct mtk_wdma_desc *desc = dev->tx_buf_ring.desc; - void **page_list = dev->tx_buf_ring.pages; int page_idx; int i; @@ -400,13 +401,12 @@ mtk_wed_free_tx_buffer(struct mtk_wed_device *dev) for (i = 0, page_idx = 0; i < dev->tx_buf_ring.size; i += MTK_WED_BUF_PER_PAGE) { - void *page = page_list[page_idx++]; - dma_addr_t buf_addr; + dma_addr_t buf_addr = page_list[page_idx].phy_addr; + void *page = page_list[page_idx++].p; if (!page) break; - buf_addr = le32_to_cpu(desc[i].buf0); dma_unmap_page(dev->hw->dev, buf_addr, PAGE_SIZE, DMA_BIDIRECTIONAL); __free_page(page); diff --git a/include/linux/soc/mediatek/mtk_wed.h b/include/linux/soc/mediatek/mtk_wed.h index c6512c216b27..5f00dc26582b 100644 --- a/include/linux/soc/mediatek/mtk_wed.h +++ b/include/linux/soc/mediatek/mtk_wed.h @@ -76,6 +76,11 @@ struct mtk_wed_wo_rx_stats { __le32 rx_drop_cnt; }; +struct mtk_wed_buf { + void *p; + dma_addr_t phy_addr; +}; + struct mtk_wed_device { #ifdef CONFIG_NET_MEDIATEK_SOC_WED const struct mtk_wed_ops *ops; @@ -97,7 +102,7 @@ struct mtk_wed_device { struct { int size; - void **pages; + struct mtk_wed_buf *pages; struct mtk_wdma_desc *desc; dma_addr_t desc_phys; } tx_buf_ring;