From patchwork Sun Apr 18 22:19:39 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Bogendoerfer X-Patchwork-Id: 12210413 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 52CBBC43461 for ; Sun, 18 Apr 2021 22:19:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 31A54610A1 for ; Sun, 18 Apr 2021 22:19:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235689AbhDRWUX (ORCPT ); Sun, 18 Apr 2021 18:20:23 -0400 Received: from mx2.suse.de ([195.135.220.15]:38236 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232357AbhDRWUV (ORCPT ); Sun, 18 Apr 2021 18:20:21 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 66789AFF2; Sun, 18 Apr 2021 22:19:51 +0000 (UTC) From: Thomas Bogendoerfer To: "David S. Miller" , Jakub Kicinski , Rob Herring , netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org Subject: [PATCH v6 net-next 01/10] net: korina: Fix MDIO functions Date: Mon, 19 Apr 2021 00:19:39 +0200 Message-Id: <20210418221949.130779-2-tsbogend@alpha.franken.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210418221949.130779-1-tsbogend@alpha.franken.de> References: <20210418221949.130779-1-tsbogend@alpha.franken.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org Fixed MDIO functions to work reliable and not just by accident. Signed-off-by: Thomas Bogendoerfer --- drivers/net/ethernet/Kconfig | 1 + drivers/net/ethernet/korina.c | 56 +++++++++++++++++++++++------------ 2 files changed, 38 insertions(+), 19 deletions(-) diff --git a/drivers/net/ethernet/Kconfig b/drivers/net/ethernet/Kconfig index ad04660b97b8..c059b4bd3f23 100644 --- a/drivers/net/ethernet/Kconfig +++ b/drivers/net/ethernet/Kconfig @@ -98,6 +98,7 @@ config JME config KORINA tristate "Korina (IDT RC32434) Ethernet support" depends on MIKROTIK_RB532 + select MII help If you have a Mikrotik RouterBoard 500 or IDT RC32434 based system say Y. Otherwise say N. diff --git a/drivers/net/ethernet/korina.c b/drivers/net/ethernet/korina.c index 925161959b9b..1b7e1c75ed9e 100644 --- a/drivers/net/ethernet/korina.c +++ b/drivers/net/ethernet/korina.c @@ -41,6 +41,7 @@ #include #include #include +#include #include #include #include @@ -137,7 +138,6 @@ struct korina_private { struct mii_if_info mii_if; struct work_struct restart_task; struct net_device *dev; - int phy_addr; }; extern unsigned int idt_cpu_freq; @@ -292,32 +292,48 @@ static int korina_send_packet(struct sk_buff *skb, struct net_device *dev) return NETDEV_TX_OK; } -static int mdio_read(struct net_device *dev, int mii_id, int reg) +static int korina_mdio_wait(struct korina_private *lp) +{ + u32 value; + + return readl_poll_timeout_atomic(&lp->eth_regs->miimind, + value, value & ETH_MII_IND_BSY, + 1, 1000); +} + +static int korina_mdio_read(struct net_device *dev, int phy, int reg) { struct korina_private *lp = netdev_priv(dev); int ret; - mii_id = ((lp->rx_irq == 0x2c ? 1 : 0) << 8); + ret = korina_mdio_wait(lp); + if (ret < 0) + return ret; - writel(0, &lp->eth_regs->miimcfg); - writel(0, &lp->eth_regs->miimcmd); - writel(mii_id | reg, &lp->eth_regs->miimaddr); - writel(ETH_MII_CMD_SCN, &lp->eth_regs->miimcmd); + writel(phy << 8 | reg, &lp->eth_regs->miimaddr); + writel(1, &lp->eth_regs->miimcmd); - ret = (int)(readl(&lp->eth_regs->miimrdd)); + ret = korina_mdio_wait(lp); + if (ret < 0) + return ret; + + if (readl(&lp->eth_regs->miimind) & ETH_MII_IND_NV) + return -EINVAL; + + ret = readl(&lp->eth_regs->miimrdd); + writel(0, &lp->eth_regs->miimcmd); return ret; } -static void mdio_write(struct net_device *dev, int mii_id, int reg, int val) +static void korina_mdio_write(struct net_device *dev, int phy, int reg, int val) { struct korina_private *lp = netdev_priv(dev); - mii_id = ((lp->rx_irq == 0x2c ? 1 : 0) << 8); + if (korina_mdio_wait(lp)) + return; - writel(0, &lp->eth_regs->miimcfg); - writel(1, &lp->eth_regs->miimcmd); - writel(mii_id | reg, &lp->eth_regs->miimaddr); - writel(ETH_MII_CMD_SCN, &lp->eth_regs->miimcmd); + writel(0, &lp->eth_regs->miimcmd); + writel(phy << 8 | reg, &lp->eth_regs->miimaddr); writel(val, &lp->eth_regs->miimwtd); } @@ -643,7 +659,7 @@ static void korina_check_media(struct net_device *dev, unsigned int init_media) { struct korina_private *lp = netdev_priv(dev); - mii_check_media(&lp->mii_if, 0, init_media); + mii_check_media(&lp->mii_if, 1, init_media); if (lp->mii_if.full_duplex) writel(readl(&lp->eth_regs->ethmac2) | ETH_MAC2_FD, @@ -869,12 +885,15 @@ static int korina_init(struct net_device *dev) * Clock independent setting */ writel(((idt_cpu_freq) / MII_CLOCK + 1) & ~1, &lp->eth_regs->ethmcp); + writel(0, &lp->eth_regs->miimcfg); /* don't transmit until fifo contains 48b */ writel(48, &lp->eth_regs->ethfifott); writel(ETH_MAC1_RE, &lp->eth_regs->ethmac1); + korina_check_media(dev, 1); + napi_enable(&lp->napi); netif_start_queue(dev); @@ -1089,11 +1108,10 @@ static int korina_probe(struct platform_device *pdev) dev->watchdog_timeo = TX_TIMEOUT; netif_napi_add(dev, &lp->napi, korina_poll, NAPI_POLL_WEIGHT); - lp->phy_addr = (((lp->rx_irq == 0x2c? 1:0) << 8) | 0x05); lp->mii_if.dev = dev; - lp->mii_if.mdio_read = mdio_read; - lp->mii_if.mdio_write = mdio_write; - lp->mii_if.phy_id = lp->phy_addr; + lp->mii_if.mdio_read = korina_mdio_read; + lp->mii_if.mdio_write = korina_mdio_write; + lp->mii_if.phy_id = 1; lp->mii_if.phy_id_mask = 0x1f; lp->mii_if.reg_num_mask = 0x1f; From patchwork Sun Apr 18 22:19:40 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Bogendoerfer X-Patchwork-Id: 12210417 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 CDAA8C433B4 for ; Sun, 18 Apr 2021 22:20:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A69D7610EA for ; Sun, 18 Apr 2021 22:20:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235868AbhDRWUY (ORCPT ); Sun, 18 Apr 2021 18:20:24 -0400 Received: from mx2.suse.de ([195.135.220.15]:38252 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232742AbhDRWUV (ORCPT ); Sun, 18 Apr 2021 18:20:21 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id B8D08B123; Sun, 18 Apr 2021 22:19:51 +0000 (UTC) From: Thomas Bogendoerfer To: "David S. Miller" , Jakub Kicinski , Rob Herring , netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org Cc: Andrew Lunn Subject: [PATCH v6 net-next 02/10] net: korina: Use devres functions Date: Mon, 19 Apr 2021 00:19:40 +0200 Message-Id: <20210418221949.130779-3-tsbogend@alpha.franken.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210418221949.130779-1-tsbogend@alpha.franken.de> References: <20210418221949.130779-1-tsbogend@alpha.franken.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org Simplify probe/remove code by using devm_ functions. Reviewed-by: Andrew Lunn Signed-off-by: Thomas Bogendoerfer --- drivers/net/ethernet/korina.c | 64 ++++++++++++----------------------- 1 file changed, 21 insertions(+), 43 deletions(-) diff --git a/drivers/net/ethernet/korina.c b/drivers/net/ethernet/korina.c index 1b7e1c75ed9e..b56de01f6bb8 100644 --- a/drivers/net/ethernet/korina.c +++ b/drivers/net/ethernet/korina.c @@ -105,9 +105,9 @@ enum chain_status { /* Information that need to be kept for each board. */ struct korina_private { - struct eth_regs *eth_regs; - struct dma_reg *rx_dma_regs; - struct dma_reg *tx_dma_regs; + struct eth_regs __iomem *eth_regs; + struct dma_reg __iomem *rx_dma_regs; + struct dma_reg __iomem *tx_dma_regs; struct dma_desc *td_ring; /* transmit descriptor ring */ struct dma_desc *rd_ring; /* receive descriptor ring */ @@ -1044,10 +1044,10 @@ static int korina_probe(struct platform_device *pdev) struct korina_device *bif = platform_get_drvdata(pdev); struct korina_private *lp; struct net_device *dev; - struct resource *r; + void __iomem *p; int rc; - dev = alloc_etherdev(sizeof(struct korina_private)); + dev = devm_alloc_etherdev(&pdev->dev, sizeof(struct korina_private)); if (!dev) return -ENOMEM; @@ -1060,36 +1060,30 @@ static int korina_probe(struct platform_device *pdev) lp->rx_irq = platform_get_irq_byname(pdev, "korina_rx"); lp->tx_irq = platform_get_irq_byname(pdev, "korina_tx"); - r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "korina_regs"); - dev->base_addr = r->start; - lp->eth_regs = ioremap(r->start, resource_size(r)); - if (!lp->eth_regs) { + p = devm_platform_ioremap_resource_byname(pdev, "korina_regs"); + if (!p) { printk(KERN_ERR DRV_NAME ": cannot remap registers\n"); - rc = -ENXIO; - goto probe_err_out; + return -ENOMEM; } + lp->eth_regs = p; - r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "korina_dma_rx"); - lp->rx_dma_regs = ioremap(r->start, resource_size(r)); - if (!lp->rx_dma_regs) { + p = devm_platform_ioremap_resource_byname(pdev, "korina_dma_rx"); + if (!p) { printk(KERN_ERR DRV_NAME ": cannot remap Rx DMA registers\n"); - rc = -ENXIO; - goto probe_err_dma_rx; + return -ENOMEM; } + lp->rx_dma_regs = p; - r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "korina_dma_tx"); - lp->tx_dma_regs = ioremap(r->start, resource_size(r)); - if (!lp->tx_dma_regs) { + p = devm_platform_ioremap_resource_byname(pdev, "korina_dma_tx"); + if (!p) { printk(KERN_ERR DRV_NAME ": cannot remap Tx DMA registers\n"); - rc = -ENXIO; - goto probe_err_dma_tx; + return -ENOMEM; } + lp->tx_dma_regs = p; lp->td_ring = kmalloc(TD_RING_SIZE + RD_RING_SIZE, GFP_KERNEL); - if (!lp->td_ring) { - rc = -ENXIO; - goto probe_err_td_ring; - } + if (!lp->td_ring) + return -ENOMEM; dma_cache_inv((unsigned long)(lp->td_ring), TD_RING_SIZE + RD_RING_SIZE); @@ -1119,7 +1113,8 @@ static int korina_probe(struct platform_device *pdev) if (rc < 0) { printk(KERN_ERR DRV_NAME ": cannot register net device: %d\n", rc); - goto probe_err_register; + kfree((struct dma_desc *)KSEG0ADDR(lp->td_ring)); + return rc; } timer_setup(&lp->media_check_timer, korina_poll_media, 0); @@ -1127,20 +1122,7 @@ static int korina_probe(struct platform_device *pdev) printk(KERN_INFO "%s: " DRV_NAME "-" DRV_VERSION " " DRV_RELDATE "\n", dev->name); -out: return rc; - -probe_err_register: - kfree((struct dma_desc *)KSEG0ADDR(lp->td_ring)); -probe_err_td_ring: - iounmap(lp->tx_dma_regs); -probe_err_dma_tx: - iounmap(lp->rx_dma_regs); -probe_err_dma_rx: - iounmap(lp->eth_regs); -probe_err_out: - free_netdev(dev); - goto out; } static int korina_remove(struct platform_device *pdev) @@ -1148,13 +1130,9 @@ static int korina_remove(struct platform_device *pdev) struct korina_device *bif = platform_get_drvdata(pdev); struct korina_private *lp = netdev_priv(bif->dev); - iounmap(lp->eth_regs); - iounmap(lp->rx_dma_regs); - iounmap(lp->tx_dma_regs); kfree((struct dma_desc *)KSEG0ADDR(lp->td_ring)); unregister_netdev(bif->dev); - free_netdev(bif->dev); return 0; } From patchwork Sun Apr 18 22:19:41 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Bogendoerfer X-Patchwork-Id: 12210425 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 E8201C43462 for ; Sun, 18 Apr 2021 22:20:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CFEBF6100B for ; Sun, 18 Apr 2021 22:20:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235958AbhDRWU0 (ORCPT ); Sun, 18 Apr 2021 18:20:26 -0400 Received: from mx2.suse.de ([195.135.220.15]:38270 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232806AbhDRWUW (ORCPT ); Sun, 18 Apr 2021 18:20:22 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 1402FB137; Sun, 18 Apr 2021 22:19:52 +0000 (UTC) From: Thomas Bogendoerfer To: "David S. Miller" , Jakub Kicinski , Rob Herring , netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org Cc: Andrew Lunn Subject: [PATCH v6 net-next 03/10] net: korina: Remove not needed cache flushes Date: Mon, 19 Apr 2021 00:19:41 +0200 Message-Id: <20210418221949.130779-4-tsbogend@alpha.franken.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210418221949.130779-1-tsbogend@alpha.franken.de> References: <20210418221949.130779-1-tsbogend@alpha.franken.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org Descriptors are mapped uncached so there is no need to do any cache handling for them. Reviewed-by: Andrew Lunn Signed-off-by: Thomas Bogendoerfer --- drivers/net/ethernet/korina.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/drivers/net/ethernet/korina.c b/drivers/net/ethernet/korina.c index b56de01f6bb8..c7abb4a8dd37 100644 --- a/drivers/net/ethernet/korina.c +++ b/drivers/net/ethernet/korina.c @@ -231,7 +231,6 @@ static int korina_send_packet(struct sk_buff *skb, struct net_device *dev) dma_cache_wback((u32)skb->data, skb->len); /* Setup the transmit descriptor. */ - dma_cache_inv((u32) td, sizeof(*td)); td->ca = CPHYSADDR(skb->data); chain_prev = (lp->tx_chain_tail - 1) & KORINA_TDS_MASK; chain_next = (lp->tx_chain_tail + 1) & KORINA_TDS_MASK; @@ -284,7 +283,6 @@ static int korina_send_packet(struct sk_buff *skb, struct net_device *dev) lp->tx_chain_tail = chain_next; } } - dma_cache_wback((u32) td, sizeof(*td)); netif_trans_update(dev); spin_unlock_irqrestore(&lp->lock, flags); @@ -373,8 +371,6 @@ static int korina_rx(struct net_device *dev, int limit) u32 devcs, pkt_len, dmas; int count; - dma_cache_inv((u32)rd, sizeof(*rd)); - for (count = 0; count < limit; count++) { skb = lp->rx_skb[lp->rx_next_done]; skb_new = NULL; @@ -453,7 +449,6 @@ static int korina_rx(struct net_device *dev, int limit) ~DMA_DESC_COD; lp->rx_next_done = (lp->rx_next_done + 1) & KORINA_RDS_MASK; - dma_cache_wback((u32)rd, sizeof(*rd)); rd = &lp->rd_ring[lp->rx_next_done]; writel(~DMA_STAT_DONE, &lp->rx_dma_regs->dmas); } @@ -468,7 +463,6 @@ static int korina_rx(struct net_device *dev, int limit) rd->devcs = 0; skb = lp->rx_skb[lp->rx_next_done]; rd->ca = CPHYSADDR(skb->data); - dma_cache_wback((u32)rd, sizeof(*rd)); korina_chain_rx(lp, rd); } From patchwork Sun Apr 18 22:19:42 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Bogendoerfer X-Patchwork-Id: 12210415 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 A2F17C43470 for ; Sun, 18 Apr 2021 22:20:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8A7D961026 for ; Sun, 18 Apr 2021 22:20:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236105AbhDRWU2 (ORCPT ); Sun, 18 Apr 2021 18:20:28 -0400 Received: from mx2.suse.de ([195.135.220.15]:38286 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232880AbhDRWUW (ORCPT ); Sun, 18 Apr 2021 18:20:22 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 63E5BB13B; Sun, 18 Apr 2021 22:19:52 +0000 (UTC) From: Thomas Bogendoerfer To: "David S. Miller" , Jakub Kicinski , Rob Herring , netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org Cc: Andrew Lunn Subject: [PATCH v6 net-next 04/10] net: korina: Remove nested helpers Date: Mon, 19 Apr 2021 00:19:42 +0200 Message-Id: <20210418221949.130779-5-tsbogend@alpha.franken.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210418221949.130779-1-tsbogend@alpha.franken.de> References: <20210418221949.130779-1-tsbogend@alpha.franken.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org Remove helpers, which are only used in one call site. Reviewed-by: Andrew Lunn Signed-off-by: Thomas Bogendoerfer --- drivers/net/ethernet/korina.c | 28 +++------------------------- 1 file changed, 3 insertions(+), 25 deletions(-) diff --git a/drivers/net/ethernet/korina.c b/drivers/net/ethernet/korina.c index c7abb4a8dd37..955fe3d3da06 100644 --- a/drivers/net/ethernet/korina.c +++ b/drivers/net/ethernet/korina.c @@ -142,12 +142,6 @@ struct korina_private { extern unsigned int idt_cpu_freq; -static inline void korina_start_dma(struct dma_reg *ch, u32 dma_addr) -{ - writel(0, &ch->dmandptr); - writel(dma_addr, &ch->dmadptr); -} - static inline void korina_abort_dma(struct net_device *dev, struct dma_reg *ch) { @@ -164,11 +158,6 @@ static inline void korina_abort_dma(struct net_device *dev, writel(0, &ch->dmandptr); } -static inline void korina_chain_dma(struct dma_reg *ch, u32 dma_addr) -{ - writel(dma_addr, &ch->dmandptr); -} - static void korina_abort_tx(struct net_device *dev) { struct korina_private *lp = netdev_priv(dev); @@ -183,18 +172,6 @@ static void korina_abort_rx(struct net_device *dev) korina_abort_dma(dev, lp->rx_dma_regs); } -static void korina_start_rx(struct korina_private *lp, - struct dma_desc *rd) -{ - korina_start_dma(lp->rx_dma_regs, CPHYSADDR(rd)); -} - -static void korina_chain_rx(struct korina_private *lp, - struct dma_desc *rd) -{ - korina_chain_dma(lp->rx_dma_regs, CPHYSADDR(rd)); -} - /* transmit packet */ static int korina_send_packet(struct sk_buff *skb, struct net_device *dev) { @@ -463,7 +440,7 @@ static int korina_rx(struct net_device *dev, int limit) rd->devcs = 0; skb = lp->rx_skb[lp->rx_next_done]; rd->ca = CPHYSADDR(skb->data); - korina_chain_rx(lp, rd); + writel(CPHYSADDR(rd), &lp->rx_dma_regs->dmandptr); } return count; @@ -840,7 +817,8 @@ static int korina_init(struct net_device *dev) writel(0, &lp->rx_dma_regs->dmas); /* Start Rx DMA */ - korina_start_rx(lp, &lp->rd_ring[0]); + writel(0, &lp->rx_dma_regs->dmandptr); + writel(CPHYSADDR(&lp->rd_ring[0]), &lp->rx_dma_regs->dmadptr); writel(readl(&lp->tx_dma_regs->dmasm) & ~(DMA_STAT_FINI | DMA_STAT_ERR), From patchwork Sun Apr 18 22:19:43 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Bogendoerfer X-Patchwork-Id: 12210419 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 15D82C43603 for ; Sun, 18 Apr 2021 22:20:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F28E56100B for ; Sun, 18 Apr 2021 22:20:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236118AbhDRWU2 (ORCPT ); Sun, 18 Apr 2021 18:20:28 -0400 Received: from mx2.suse.de ([195.135.220.15]:38298 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235346AbhDRWUX (ORCPT ); Sun, 18 Apr 2021 18:20:23 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id C4918B141; Sun, 18 Apr 2021 22:19:52 +0000 (UTC) From: Thomas Bogendoerfer To: "David S. Miller" , Jakub Kicinski , Rob Herring , netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org Cc: Andrew Lunn Subject: [PATCH v6 net-next 05/10] net: korina: Use DMA API Date: Mon, 19 Apr 2021 00:19:43 +0200 Message-Id: <20210418221949.130779-6-tsbogend@alpha.franken.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210418221949.130779-1-tsbogend@alpha.franken.de> References: <20210418221949.130779-1-tsbogend@alpha.franken.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org Instead of messing with MIPS specific macros use DMA API for mapping descriptors and skbs. Reviewed-by: Andrew Lunn Signed-off-by: Thomas Bogendoerfer --- drivers/net/ethernet/korina.c | 158 +++++++++++++++++++++------------- 1 file changed, 98 insertions(+), 60 deletions(-) diff --git a/drivers/net/ethernet/korina.c b/drivers/net/ethernet/korina.c index 955fe3d3da06..44fad9e924ca 100644 --- a/drivers/net/ethernet/korina.c +++ b/drivers/net/ethernet/korina.c @@ -110,10 +110,15 @@ struct korina_private { struct dma_reg __iomem *tx_dma_regs; struct dma_desc *td_ring; /* transmit descriptor ring */ struct dma_desc *rd_ring; /* receive descriptor ring */ + dma_addr_t td_dma; + dma_addr_t rd_dma; struct sk_buff *tx_skb[KORINA_NUM_TDS]; struct sk_buff *rx_skb[KORINA_NUM_RDS]; + dma_addr_t rx_skb_dma[KORINA_NUM_RDS]; + dma_addr_t tx_skb_dma[KORINA_NUM_TDS]; + int rx_next_done; int rx_chain_head; int rx_chain_tail; @@ -138,10 +143,21 @@ struct korina_private { struct mii_if_info mii_if; struct work_struct restart_task; struct net_device *dev; + struct device *dmadev; }; extern unsigned int idt_cpu_freq; +static dma_addr_t korina_tx_dma(struct korina_private *lp, int idx) +{ + return lp->td_dma + (idx * sizeof(struct dma_desc)); +} + +static dma_addr_t korina_rx_dma(struct korina_private *lp, int idx) +{ + return lp->rd_dma + (idx * sizeof(struct dma_desc)); +} + static inline void korina_abort_dma(struct net_device *dev, struct dma_reg *ch) { @@ -176,14 +192,17 @@ static void korina_abort_rx(struct net_device *dev) static int korina_send_packet(struct sk_buff *skb, struct net_device *dev) { struct korina_private *lp = netdev_priv(dev); - unsigned long flags; - u32 length; u32 chain_prev, chain_next; + unsigned long flags; struct dma_desc *td; + dma_addr_t ca; + u32 length; + int idx; spin_lock_irqsave(&lp->lock, flags); - td = &lp->td_ring[lp->tx_chain_tail]; + idx = lp->tx_chain_tail; + td = &lp->td_ring[idx]; /* stop queue when full, drop pkts if queue already full */ if (lp->tx_count >= (KORINA_NUM_TDS - 2)) { @@ -191,26 +210,26 @@ static int korina_send_packet(struct sk_buff *skb, struct net_device *dev) if (lp->tx_count == (KORINA_NUM_TDS - 2)) netif_stop_queue(dev); - else { - dev->stats.tx_dropped++; - dev_kfree_skb_any(skb); - spin_unlock_irqrestore(&lp->lock, flags); - - return NETDEV_TX_OK; - } + else + goto drop_packet; } lp->tx_count++; - lp->tx_skb[lp->tx_chain_tail] = skb; + lp->tx_skb[idx] = skb; length = skb->len; - dma_cache_wback((u32)skb->data, skb->len); /* Setup the transmit descriptor. */ - td->ca = CPHYSADDR(skb->data); - chain_prev = (lp->tx_chain_tail - 1) & KORINA_TDS_MASK; - chain_next = (lp->tx_chain_tail + 1) & KORINA_TDS_MASK; + ca = dma_map_single(lp->dmadev, skb->data, length, DMA_TO_DEVICE); + if (dma_mapping_error(lp->dmadev, ca)) + goto drop_packet; + + lp->tx_skb_dma[idx] = ca; + td->ca = ca; + + chain_prev = (idx - 1) & KORINA_TDS_MASK; + chain_next = (idx + 1) & KORINA_TDS_MASK; if (readl(&(lp->tx_dma_regs->dmandptr)) == 0) { if (lp->tx_chain_status == desc_empty) { @@ -220,8 +239,8 @@ static int korina_send_packet(struct sk_buff *skb, struct net_device *dev) /* Move tail */ lp->tx_chain_tail = chain_next; /* Write to NDPTR */ - writel(CPHYSADDR(&lp->td_ring[lp->tx_chain_head]), - &lp->tx_dma_regs->dmandptr); + writel(korina_tx_dma(lp, lp->tx_chain_head), + &lp->tx_dma_regs->dmandptr); /* Move head to tail */ lp->tx_chain_head = lp->tx_chain_tail; } else { @@ -232,12 +251,12 @@ static int korina_send_packet(struct sk_buff *skb, struct net_device *dev) lp->td_ring[chain_prev].control &= ~DMA_DESC_COF; /* Link to prev */ - lp->td_ring[chain_prev].link = CPHYSADDR(td); + lp->td_ring[chain_prev].link = korina_tx_dma(lp, idx); /* Move tail */ lp->tx_chain_tail = chain_next; /* Write to NDPTR */ - writel(CPHYSADDR(&lp->td_ring[lp->tx_chain_head]), - &(lp->tx_dma_regs->dmandptr)); + writel(korina_tx_dma(lp, lp->tx_chain_head), + &lp->tx_dma_regs->dmandptr); /* Move head to tail */ lp->tx_chain_head = lp->tx_chain_tail; lp->tx_chain_status = desc_empty; @@ -256,7 +275,7 @@ static int korina_send_packet(struct sk_buff *skb, struct net_device *dev) DMA_DESC_COF | DMA_DESC_IOF; lp->td_ring[chain_prev].control &= ~DMA_DESC_COF; - lp->td_ring[chain_prev].link = CPHYSADDR(td); + lp->td_ring[chain_prev].link = korina_tx_dma(lp, idx); lp->tx_chain_tail = chain_next; } } @@ -264,6 +283,13 @@ static int korina_send_packet(struct sk_buff *skb, struct net_device *dev) netif_trans_update(dev); spin_unlock_irqrestore(&lp->lock, flags); + return NETDEV_TX_OK; + +drop_packet: + dev->stats.tx_dropped++; + dev_kfree_skb_any(skb); + spin_unlock_irqrestore(&lp->lock, flags); + return NETDEV_TX_OK; } @@ -344,8 +370,8 @@ static int korina_rx(struct net_device *dev, int limit) struct korina_private *lp = netdev_priv(dev); struct dma_desc *rd = &lp->rd_ring[lp->rx_next_done]; struct sk_buff *skb, *skb_new; - u8 *pkt_buf; u32 devcs, pkt_len, dmas; + dma_addr_t ca; int count; for (count = 0; count < limit; count++) { @@ -381,20 +407,22 @@ static int korina_rx(struct net_device *dev, int limit) goto next; } - pkt_len = RCVPKT_LENGTH(devcs); - - /* must be the (first and) last - * descriptor then */ - pkt_buf = (u8 *)lp->rx_skb[lp->rx_next_done]->data; - - /* invalidate the cache */ - dma_cache_inv((unsigned long)pkt_buf, pkt_len - 4); - /* Malloc up new buffer. */ skb_new = netdev_alloc_skb_ip_align(dev, KORINA_RBSIZE); - if (!skb_new) break; + + ca = dma_map_single(lp->dmadev, skb_new->data, KORINA_RBSIZE, + DMA_FROM_DEVICE); + if (dma_mapping_error(lp->dmadev, ca)) { + dev_kfree_skb_any(skb_new); + break; + } + + pkt_len = RCVPKT_LENGTH(devcs); + dma_unmap_single(lp->dmadev, lp->rx_skb_dma[lp->rx_next_done], + pkt_len, DMA_FROM_DEVICE); + /* Do not count the CRC */ skb_put(skb, pkt_len - 4); skb->protocol = eth_type_trans(skb, dev); @@ -409,15 +437,13 @@ static int korina_rx(struct net_device *dev, int limit) dev->stats.multicast++; lp->rx_skb[lp->rx_next_done] = skb_new; + lp->rx_skb_dma[lp->rx_next_done] = ca; next: rd->devcs = 0; /* Restore descriptor's curr_addr */ - if (skb_new) - rd->ca = CPHYSADDR(skb_new->data); - else - rd->ca = CPHYSADDR(skb->data); + rd->ca = lp->rx_skb_dma[lp->rx_next_done]; rd->control = DMA_COUNT(KORINA_RBSIZE) | DMA_DESC_COD | DMA_DESC_IOD; @@ -438,9 +464,9 @@ static int korina_rx(struct net_device *dev, int limit) lp->dma_halt_cnt++; rd->devcs = 0; - skb = lp->rx_skb[lp->rx_next_done]; - rd->ca = CPHYSADDR(skb->data); - writel(CPHYSADDR(rd), &lp->rx_dma_regs->dmandptr); + rd->ca = lp->rx_skb_dma[lp->rx_next_done]; + writel(korina_rx_dma(lp, rd - lp->rd_ring), + &lp->rx_dma_regs->dmandptr); } return count; @@ -563,6 +589,10 @@ static void korina_tx(struct net_device *dev) /* We must always free the original skb */ if (lp->tx_skb[lp->tx_next_done]) { + dma_unmap_single(lp->dmadev, + lp->tx_skb_dma[lp->tx_next_done], + lp->tx_skb[lp->tx_next_done]->len, + DMA_TO_DEVICE); dev_kfree_skb_any(lp->tx_skb[lp->tx_next_done]); lp->tx_skb[lp->tx_next_done] = NULL; } @@ -609,8 +639,8 @@ korina_tx_dma_interrupt(int irq, void *dev_id) if (lp->tx_chain_status == desc_filled && (readl(&(lp->tx_dma_regs->dmandptr)) == 0)) { - writel(CPHYSADDR(&lp->td_ring[lp->tx_chain_head]), - &(lp->tx_dma_regs->dmandptr)); + writel(korina_tx_dma(lp, lp->tx_chain_head), + &lp->tx_dma_regs->dmandptr); lp->tx_chain_status = desc_empty; lp->tx_chain_head = lp->tx_chain_tail; netif_trans_update(dev); @@ -730,6 +760,7 @@ static int korina_alloc_ring(struct net_device *dev) { struct korina_private *lp = netdev_priv(dev); struct sk_buff *skb; + dma_addr_t ca; int i; /* Initialize the transmit descriptors */ @@ -752,13 +783,18 @@ static int korina_alloc_ring(struct net_device *dev) lp->rd_ring[i].control = DMA_DESC_IOD | DMA_COUNT(KORINA_RBSIZE); lp->rd_ring[i].devcs = 0; - lp->rd_ring[i].ca = CPHYSADDR(skb->data); - lp->rd_ring[i].link = CPHYSADDR(&lp->rd_ring[i+1]); + ca = dma_map_single(lp->dmadev, skb->data, KORINA_RBSIZE, + DMA_FROM_DEVICE); + if (dma_mapping_error(lp->dmadev, ca)) + return -ENOMEM; + lp->rd_ring[i].ca = ca; + lp->rx_skb_dma[i] = ca; + lp->rd_ring[i].link = korina_rx_dma(lp, i + 1); } /* loop back receive descriptors, so the last * descriptor points to the first one */ - lp->rd_ring[i - 1].link = CPHYSADDR(&lp->rd_ring[0]); + lp->rd_ring[i - 1].link = lp->rd_dma; lp->rd_ring[i - 1].control |= DMA_DESC_COD; lp->rx_next_done = 0; @@ -776,16 +812,22 @@ static void korina_free_ring(struct net_device *dev) for (i = 0; i < KORINA_NUM_RDS; i++) { lp->rd_ring[i].control = 0; - if (lp->rx_skb[i]) + if (lp->rx_skb[i]) { + dma_unmap_single(lp->dmadev, lp->rx_skb_dma[i], + KORINA_RBSIZE, DMA_FROM_DEVICE); dev_kfree_skb_any(lp->rx_skb[i]); - lp->rx_skb[i] = NULL; + lp->rx_skb[i] = NULL; + } } for (i = 0; i < KORINA_NUM_TDS; i++) { lp->td_ring[i].control = 0; - if (lp->tx_skb[i]) + if (lp->tx_skb[i]) { + dma_unmap_single(lp->dmadev, lp->tx_skb_dma[i], + lp->tx_skb[i]->len, DMA_TO_DEVICE); dev_kfree_skb_any(lp->tx_skb[i]); - lp->tx_skb[i] = NULL; + lp->tx_skb[i] = NULL; + } } } @@ -818,7 +860,7 @@ static int korina_init(struct net_device *dev) writel(0, &lp->rx_dma_regs->dmas); /* Start Rx DMA */ writel(0, &lp->rx_dma_regs->dmandptr); - writel(CPHYSADDR(&lp->rd_ring[0]), &lp->rx_dma_regs->dmadptr); + writel(korina_rx_dma(lp, 0), &lp->rx_dma_regs->dmadptr); writel(readl(&lp->tx_dma_regs->dmasm) & ~(DMA_STAT_FINI | DMA_STAT_ERR), @@ -1053,21 +1095,21 @@ static int korina_probe(struct platform_device *pdev) } lp->tx_dma_regs = p; - lp->td_ring = kmalloc(TD_RING_SIZE + RD_RING_SIZE, GFP_KERNEL); + lp->td_ring = dmam_alloc_coherent(&pdev->dev, TD_RING_SIZE, + &lp->td_dma, GFP_KERNEL); if (!lp->td_ring) return -ENOMEM; - dma_cache_inv((unsigned long)(lp->td_ring), - TD_RING_SIZE + RD_RING_SIZE); - - /* now convert TD_RING pointer to KSEG1 */ - lp->td_ring = (struct dma_desc *)KSEG1ADDR(lp->td_ring); - lp->rd_ring = &lp->td_ring[KORINA_NUM_TDS]; + lp->rd_ring = dmam_alloc_coherent(&pdev->dev, RD_RING_SIZE, + &lp->rd_dma, GFP_KERNEL); + if (!lp->rd_ring) + return -ENOMEM; spin_lock_init(&lp->lock); /* just use the rx dma irq */ dev->irq = lp->rx_irq; lp->dev = dev; + lp->dmadev = &pdev->dev; dev->netdev_ops = &korina_netdev_ops; dev->ethtool_ops = &netdev_ethtool_ops; @@ -1085,7 +1127,6 @@ static int korina_probe(struct platform_device *pdev) if (rc < 0) { printk(KERN_ERR DRV_NAME ": cannot register net device: %d\n", rc); - kfree((struct dma_desc *)KSEG0ADDR(lp->td_ring)); return rc; } timer_setup(&lp->media_check_timer, korina_poll_media, 0); @@ -1100,9 +1141,6 @@ static int korina_probe(struct platform_device *pdev) static int korina_remove(struct platform_device *pdev) { struct korina_device *bif = platform_get_drvdata(pdev); - struct korina_private *lp = netdev_priv(bif->dev); - - kfree((struct dma_desc *)KSEG0ADDR(lp->td_ring)); unregister_netdev(bif->dev); From patchwork Sun Apr 18 22:19:44 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Bogendoerfer X-Patchwork-Id: 12210421 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 D4826C43611 for ; Sun, 18 Apr 2021 22:20:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B8C77610CA for ; Sun, 18 Apr 2021 22:20:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236451AbhDRWU3 (ORCPT ); Sun, 18 Apr 2021 18:20:29 -0400 Received: from mx2.suse.de ([195.135.220.15]:38308 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235484AbhDRWUX (ORCPT ); Sun, 18 Apr 2021 18:20:23 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 31F10B143; Sun, 18 Apr 2021 22:19:53 +0000 (UTC) From: Thomas Bogendoerfer To: "David S. Miller" , Jakub Kicinski , Rob Herring , netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org Subject: [PATCH v6 net-next 06/10] net: korina: Only pass mac address via platform data Date: Mon, 19 Apr 2021 00:19:44 +0200 Message-Id: <20210418221949.130779-7-tsbogend@alpha.franken.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210418221949.130779-1-tsbogend@alpha.franken.de> References: <20210418221949.130779-1-tsbogend@alpha.franken.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org Get rid of access to struct korina_device by just passing the mac address via platform data and use drvdata for passing netdev to remove function. Signed-off-by: Thomas Bogendoerfer --- arch/mips/rb532/devices.c | 5 +++-- drivers/net/ethernet/korina.c | 11 ++++++----- 2 files changed, 9 insertions(+), 7 deletions(-) diff --git a/arch/mips/rb532/devices.c b/arch/mips/rb532/devices.c index dd34f1b32b79..5fc3c8ee4f31 100644 --- a/arch/mips/rb532/devices.c +++ b/arch/mips/rb532/devices.c @@ -105,6 +105,9 @@ static struct platform_device korina_dev0 = { .name = "korina", .resource = korina_dev0_res, .num_resources = ARRAY_SIZE(korina_dev0_res), + .dev = { + .platform_data = &korina_dev0_data.mac, + } }; static struct resource cf_slot0_res[] = { @@ -299,8 +302,6 @@ static int __init plat_setup_devices(void) /* set the uart clock to the current cpu frequency */ rb532_uart_res[0].uartclk = idt_cpu_freq; - dev_set_drvdata(&korina_dev0.dev, &korina_dev0_data); - gpiod_add_lookup_table(&cf_slot0_gpio_table); return platform_add_devices(rb532_devs, ARRAY_SIZE(rb532_devs)); } diff --git a/drivers/net/ethernet/korina.c b/drivers/net/ethernet/korina.c index 44fad9e924ca..d6dbbdd43d7c 100644 --- a/drivers/net/ethernet/korina.c +++ b/drivers/net/ethernet/korina.c @@ -1055,7 +1055,7 @@ static const struct net_device_ops korina_netdev_ops = { static int korina_probe(struct platform_device *pdev) { - struct korina_device *bif = platform_get_drvdata(pdev); + u8 *mac_addr = dev_get_platdata(&pdev->dev); struct korina_private *lp; struct net_device *dev; void __iomem *p; @@ -1068,8 +1068,7 @@ static int korina_probe(struct platform_device *pdev) SET_NETDEV_DEV(dev, &pdev->dev); lp = netdev_priv(dev); - bif->dev = dev; - memcpy(dev->dev_addr, bif->mac, ETH_ALEN); + memcpy(dev->dev_addr, mac_addr, ETH_ALEN); lp->rx_irq = platform_get_irq_byname(pdev, "korina_rx"); lp->tx_irq = platform_get_irq_byname(pdev, "korina_tx"); @@ -1123,6 +1122,8 @@ static int korina_probe(struct platform_device *pdev) lp->mii_if.phy_id_mask = 0x1f; lp->mii_if.reg_num_mask = 0x1f; + platform_set_drvdata(pdev, dev); + rc = register_netdev(dev); if (rc < 0) { printk(KERN_ERR DRV_NAME @@ -1140,9 +1141,9 @@ static int korina_probe(struct platform_device *pdev) static int korina_remove(struct platform_device *pdev) { - struct korina_device *bif = platform_get_drvdata(pdev); + struct net_device *dev = platform_get_drvdata(pdev); - unregister_netdev(bif->dev); + unregister_netdev(dev); return 0; } From patchwork Sun Apr 18 22:19:45 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Bogendoerfer X-Patchwork-Id: 12210423 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 04895C43617 for ; Sun, 18 Apr 2021 22:20:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E017661026 for ; Sun, 18 Apr 2021 22:20:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236561AbhDRWU3 (ORCPT ); Sun, 18 Apr 2021 18:20:29 -0400 Received: from mx2.suse.de ([195.135.220.15]:38318 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235645AbhDRWUY (ORCPT ); Sun, 18 Apr 2021 18:20:24 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 91C7BB153; Sun, 18 Apr 2021 22:19:53 +0000 (UTC) From: Thomas Bogendoerfer To: "David S. Miller" , Jakub Kicinski , Rob Herring , netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org Subject: [PATCH v6 net-next 07/10] net: korina: Add support for device tree Date: Mon, 19 Apr 2021 00:19:45 +0200 Message-Id: <20210418221949.130779-8-tsbogend@alpha.franken.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210418221949.130779-1-tsbogend@alpha.franken.de> References: <20210418221949.130779-1-tsbogend@alpha.franken.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org If there is no mac address passed via platform data try to get it via device tree and fall back to a random mac address, if all fail. Signed-off-by: Thomas Bogendoerfer --- arch/mips/rb532/devices.c | 20 +++++--------------- drivers/net/ethernet/korina.c | 32 +++++++++++++++++++++++++------- 2 files changed, 30 insertions(+), 22 deletions(-) diff --git a/arch/mips/rb532/devices.c b/arch/mips/rb532/devices.c index 5fc3c8ee4f31..04684990e28e 100644 --- a/arch/mips/rb532/devices.c +++ b/arch/mips/rb532/devices.c @@ -58,37 +58,27 @@ EXPORT_SYMBOL(get_latch_u5); static struct resource korina_dev0_res[] = { { - .name = "korina_regs", + .name = "emac", .start = ETH0_BASE_ADDR, .end = ETH0_BASE_ADDR + sizeof(struct eth_regs), .flags = IORESOURCE_MEM, }, { - .name = "korina_rx", + .name = "rx", .start = ETH0_DMA_RX_IRQ, .end = ETH0_DMA_RX_IRQ, .flags = IORESOURCE_IRQ }, { - .name = "korina_tx", + .name = "tx", .start = ETH0_DMA_TX_IRQ, .end = ETH0_DMA_TX_IRQ, .flags = IORESOURCE_IRQ }, { - .name = "korina_ovr", - .start = ETH0_RX_OVR_IRQ, - .end = ETH0_RX_OVR_IRQ, - .flags = IORESOURCE_IRQ - }, { - .name = "korina_und", - .start = ETH0_TX_UND_IRQ, - .end = ETH0_TX_UND_IRQ, - .flags = IORESOURCE_IRQ - }, { - .name = "korina_dma_rx", + .name = "dma_rx", .start = ETH0_RX_DMA_ADDR, .end = ETH0_RX_DMA_ADDR + DMA_CHAN_OFFSET - 1, .flags = IORESOURCE_MEM, }, { - .name = "korina_dma_tx", + .name = "dma_tx", .start = ETH0_TX_DMA_ADDR, .end = ETH0_TX_DMA_ADDR + DMA_CHAN_OFFSET - 1, .flags = IORESOURCE_MEM, diff --git a/drivers/net/ethernet/korina.c b/drivers/net/ethernet/korina.c index d6dbbdd43d7c..a1f53d7753ae 100644 --- a/drivers/net/ethernet/korina.c +++ b/drivers/net/ethernet/korina.c @@ -43,6 +43,8 @@ #include #include #include +#include +#include #include #include #include @@ -1068,26 +1070,29 @@ static int korina_probe(struct platform_device *pdev) SET_NETDEV_DEV(dev, &pdev->dev); lp = netdev_priv(dev); - memcpy(dev->dev_addr, mac_addr, ETH_ALEN); + if (mac_addr) + ether_addr_copy(dev->dev_addr, mac_addr); + else if (of_get_mac_address(pdev->dev.of_node, dev->dev_addr) < 0) + eth_hw_addr_random(dev); - lp->rx_irq = platform_get_irq_byname(pdev, "korina_rx"); - lp->tx_irq = platform_get_irq_byname(pdev, "korina_tx"); + lp->rx_irq = platform_get_irq_byname(pdev, "rx"); + lp->tx_irq = platform_get_irq_byname(pdev, "tx"); - p = devm_platform_ioremap_resource_byname(pdev, "korina_regs"); + p = devm_platform_ioremap_resource_byname(pdev, "emac"); if (!p) { printk(KERN_ERR DRV_NAME ": cannot remap registers\n"); return -ENOMEM; } lp->eth_regs = p; - p = devm_platform_ioremap_resource_byname(pdev, "korina_dma_rx"); + p = devm_platform_ioremap_resource_byname(pdev, "dma_rx"); if (!p) { printk(KERN_ERR DRV_NAME ": cannot remap Rx DMA registers\n"); return -ENOMEM; } lp->rx_dma_regs = p; - p = devm_platform_ioremap_resource_byname(pdev, "korina_dma_tx"); + p = devm_platform_ioremap_resource_byname(pdev, "dma_tx"); if (!p) { printk(KERN_ERR DRV_NAME ": cannot remap Tx DMA registers\n"); return -ENOMEM; @@ -1148,8 +1153,21 @@ static int korina_remove(struct platform_device *pdev) return 0; } +#ifdef CONFIG_OF +static const struct of_device_id korina_match[] = { + { + .compatible = "idt,3243x-emac", + }, + { } +}; +MODULE_DEVICE_TABLE(of, korina_match); +#endif + static struct platform_driver korina_driver = { - .driver.name = "korina", + .driver = { + .name = "korina", + .of_match_table = of_match_ptr(korina_match), + }, .probe = korina_probe, .remove = korina_remove, }; From patchwork Sun Apr 18 22:19:46 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Bogendoerfer X-Patchwork-Id: 12210427 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 811FAC43619 for ; Sun, 18 Apr 2021 22:20:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 64E55610CB for ; Sun, 18 Apr 2021 22:20:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236598AbhDRWUa (ORCPT ); Sun, 18 Apr 2021 18:20:30 -0400 Received: from mx2.suse.de ([195.135.220.15]:38328 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235680AbhDRWUX (ORCPT ); Sun, 18 Apr 2021 18:20:23 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id DD996B15F; Sun, 18 Apr 2021 22:19:53 +0000 (UTC) From: Thomas Bogendoerfer To: "David S. Miller" , Jakub Kicinski , Rob Herring , netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org Subject: [PATCH v6 net-next 08/10] net: korina: Get mdio input clock via common clock framework Date: Mon, 19 Apr 2021 00:19:46 +0200 Message-Id: <20210418221949.130779-9-tsbogend@alpha.franken.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210418221949.130779-1-tsbogend@alpha.franken.de> References: <20210418221949.130779-1-tsbogend@alpha.franken.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org With device tree clock is provided via CCF. For non device tree use a maximum clock value to not overclock the PHY. The non device tree usage will go away after platform is converted to DT. Signed-off-by: Thomas Bogendoerfer --- drivers/net/ethernet/korina.c | 21 +++++++++++++++------ 1 file changed, 15 insertions(+), 6 deletions(-) diff --git a/drivers/net/ethernet/korina.c b/drivers/net/ethernet/korina.c index a1f53d7753ae..19f226428f89 100644 --- a/drivers/net/ethernet/korina.c +++ b/drivers/net/ethernet/korina.c @@ -57,14 +57,13 @@ #include #include #include +#include #include #include #include #include -#include -#include #include #include @@ -146,10 +145,9 @@ struct korina_private { struct work_struct restart_task; struct net_device *dev; struct device *dmadev; + int mii_clock_freq; }; -extern unsigned int idt_cpu_freq; - static dma_addr_t korina_tx_dma(struct korina_private *lp, int idx) { return lp->td_dma + (idx * sizeof(struct dma_desc)); @@ -899,8 +897,8 @@ static int korina_init(struct net_device *dev) /* Management Clock Prescaler Divisor * Clock independent setting */ - writel(((idt_cpu_freq) / MII_CLOCK + 1) & ~1, - &lp->eth_regs->ethmcp); + writel(((lp->mii_clock_freq) / MII_CLOCK + 1) & ~1, + &lp->eth_regs->ethmcp); writel(0, &lp->eth_regs->miimcfg); /* don't transmit until fifo contains 48b */ @@ -1060,6 +1058,7 @@ static int korina_probe(struct platform_device *pdev) u8 *mac_addr = dev_get_platdata(&pdev->dev); struct korina_private *lp; struct net_device *dev; + struct clk *clk; void __iomem *p; int rc; @@ -1075,6 +1074,16 @@ static int korina_probe(struct platform_device *pdev) else if (of_get_mac_address(pdev->dev.of_node, dev->dev_addr) < 0) eth_hw_addr_random(dev); + clk = devm_clk_get_optional(&pdev->dev, "mdioclk"); + if (IS_ERR(clk)) + return PTR_ERR(clk); + if (clk) { + clk_prepare_enable(clk); + lp->mii_clock_freq = clk_get_rate(clk); + } else { + lp->mii_clock_freq = 200000000; /* max possible input clk */ + } + lp->rx_irq = platform_get_irq_byname(pdev, "rx"); lp->tx_irq = platform_get_irq_byname(pdev, "tx"); From patchwork Sun Apr 18 22:19:47 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Bogendoerfer X-Patchwork-Id: 12210431 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 B2C1AC43460 for ; Sun, 18 Apr 2021 22:20:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 90478610A1 for ; Sun, 18 Apr 2021 22:20:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236765AbhDRWUb (ORCPT ); Sun, 18 Apr 2021 18:20:31 -0400 Received: from mx2.suse.de ([195.135.220.15]:38348 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235718AbhDRWUY (ORCPT ); Sun, 18 Apr 2021 18:20:24 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 5A8E7B166; Sun, 18 Apr 2021 22:19:54 +0000 (UTC) From: Thomas Bogendoerfer To: "David S. Miller" , Jakub Kicinski , Rob Herring , netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org Subject: [PATCH v6 net-next 09/10] net: korina: Make driver COMPILE_TESTable Date: Mon, 19 Apr 2021 00:19:47 +0200 Message-Id: <20210418221949.130779-10-tsbogend@alpha.franken.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210418221949.130779-1-tsbogend@alpha.franken.de> References: <20210418221949.130779-1-tsbogend@alpha.franken.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org Move structs/defines for ethernet/dma register into driver, since they are only used for this driver and remove any MIPS specific includes. This makes it possible to COMPILE_TEST the driver. Signed-off-by: Thomas Bogendoerfer --- drivers/net/ethernet/Kconfig | 2 +- drivers/net/ethernet/korina.c | 249 ++++++++++++++++++++++++++++++++-- 2 files changed, 239 insertions(+), 12 deletions(-) diff --git a/drivers/net/ethernet/Kconfig b/drivers/net/ethernet/Kconfig index c059b4bd3f23..453d202a28c1 100644 --- a/drivers/net/ethernet/Kconfig +++ b/drivers/net/ethernet/Kconfig @@ -97,7 +97,7 @@ config JME config KORINA tristate "Korina (IDT RC32434) Ethernet support" - depends on MIKROTIK_RB532 + depends on MIKROTIK_RB532 || COMPILE_TEST select MII help If you have a Mikrotik RouterBoard 500 or IDT RC32434 diff --git a/drivers/net/ethernet/korina.c b/drivers/net/ethernet/korina.c index 19f226428f89..4878e527e3c8 100644 --- a/drivers/net/ethernet/korina.c +++ b/drivers/net/ethernet/korina.c @@ -59,18 +59,244 @@ #include #include -#include -#include -#include -#include - -#include -#include - #define DRV_NAME "korina" #define DRV_VERSION "0.20" #define DRV_RELDATE "15Sep2017" +struct eth_regs { + u32 ethintfc; + u32 ethfifott; + u32 etharc; + u32 ethhash0; + u32 ethhash1; + u32 ethu0[4]; /* Reserved. */ + u32 ethpfs; + u32 ethmcp; + u32 eth_u1[10]; /* Reserved. */ + u32 ethspare; + u32 eth_u2[42]; /* Reserved. */ + u32 ethsal0; + u32 ethsah0; + u32 ethsal1; + u32 ethsah1; + u32 ethsal2; + u32 ethsah2; + u32 ethsal3; + u32 ethsah3; + u32 ethrbc; + u32 ethrpc; + u32 ethrupc; + u32 ethrfc; + u32 ethtbc; + u32 ethgpf; + u32 eth_u9[50]; /* Reserved. */ + u32 ethmac1; + u32 ethmac2; + u32 ethipgt; + u32 ethipgr; + u32 ethclrt; + u32 ethmaxf; + u32 eth_u10; /* Reserved. */ + u32 ethmtest; + u32 miimcfg; + u32 miimcmd; + u32 miimaddr; + u32 miimwtd; + u32 miimrdd; + u32 miimind; + u32 eth_u11; /* Reserved. */ + u32 eth_u12; /* Reserved. */ + u32 ethcfsa0; + u32 ethcfsa1; + u32 ethcfsa2; +}; + +/* Ethernet interrupt registers */ +#define ETH_INT_FC_EN BIT(0) +#define ETH_INT_FC_ITS BIT(1) +#define ETH_INT_FC_RIP BIT(2) +#define ETH_INT_FC_JAM BIT(3) +#define ETH_INT_FC_OVR BIT(4) +#define ETH_INT_FC_UND BIT(5) +#define ETH_INT_FC_IOC 0x000000c0 + +/* Ethernet FIFO registers */ +#define ETH_FIFI_TT_TTH_BIT 0 +#define ETH_FIFO_TT_TTH 0x0000007f + +/* Ethernet ARC/multicast registers */ +#define ETH_ARC_PRO BIT(0) +#define ETH_ARC_AM BIT(1) +#define ETH_ARC_AFM BIT(2) +#define ETH_ARC_AB BIT(3) + +/* Ethernet SAL registers */ +#define ETH_SAL_BYTE_5 0x000000ff +#define ETH_SAL_BYTE_4 0x0000ff00 +#define ETH_SAL_BYTE_3 0x00ff0000 +#define ETH_SAL_BYTE_2 0xff000000 + +/* Ethernet SAH registers */ +#define ETH_SAH_BYTE1 0x000000ff +#define ETH_SAH_BYTE0 0x0000ff00 + +/* Ethernet GPF register */ +#define ETH_GPF_PTV 0x0000ffff + +/* Ethernet PFG register */ +#define ETH_PFS_PFD BIT(0) + +/* Ethernet CFSA[0-3] registers */ +#define ETH_CFSA0_CFSA4 0x000000ff +#define ETH_CFSA0_CFSA5 0x0000ff00 +#define ETH_CFSA1_CFSA2 0x000000ff +#define ETH_CFSA1_CFSA3 0x0000ff00 +#define ETH_CFSA1_CFSA0 0x000000ff +#define ETH_CFSA1_CFSA1 0x0000ff00 + +/* Ethernet MAC1 registers */ +#define ETH_MAC1_RE BIT(0) +#define ETH_MAC1_PAF BIT(1) +#define ETH_MAC1_RFC BIT(2) +#define ETH_MAC1_TFC BIT(3) +#define ETH_MAC1_LB BIT(4) +#define ETH_MAC1_MR BIT(31) + +/* Ethernet MAC2 registers */ +#define ETH_MAC2_FD BIT(0) +#define ETH_MAC2_FLC BIT(1) +#define ETH_MAC2_HFE BIT(2) +#define ETH_MAC2_DC BIT(3) +#define ETH_MAC2_CEN BIT(4) +#define ETH_MAC2_PE BIT(5) +#define ETH_MAC2_VPE BIT(6) +#define ETH_MAC2_APE BIT(7) +#define ETH_MAC2_PPE BIT(8) +#define ETH_MAC2_LPE BIT(9) +#define ETH_MAC2_NB BIT(12) +#define ETH_MAC2_BP BIT(13) +#define ETH_MAC2_ED BIT(14) + +/* Ethernet IPGT register */ +#define ETH_IPGT 0x0000007f + +/* Ethernet IPGR registers */ +#define ETH_IPGR_IPGR2 0x0000007f +#define ETH_IPGR_IPGR1 0x00007f00 + +/* Ethernet CLRT registers */ +#define ETH_CLRT_MAX_RET 0x0000000f +#define ETH_CLRT_COL_WIN 0x00003f00 + +/* Ethernet MAXF register */ +#define ETH_MAXF 0x0000ffff + +/* Ethernet test registers */ +#define ETH_TEST_REG BIT(2) +#define ETH_MCP_DIV 0x000000ff + +/* MII registers */ +#define ETH_MII_CFG_RSVD 0x0000000c +#define ETH_MII_CMD_RD BIT(0) +#define ETH_MII_CMD_SCN BIT(1) +#define ETH_MII_REG_ADDR 0x0000001f +#define ETH_MII_PHY_ADDR 0x00001f00 +#define ETH_MII_WTD_DATA 0x0000ffff +#define ETH_MII_RDD_DATA 0x0000ffff +#define ETH_MII_IND_BSY BIT(0) +#define ETH_MII_IND_SCN BIT(1) +#define ETH_MII_IND_NV BIT(2) + +/* Values for the DEVCS field of the Ethernet DMA Rx and Tx descriptors. */ +#define ETH_RX_FD BIT(0) +#define ETH_RX_LD BIT(1) +#define ETH_RX_ROK BIT(2) +#define ETH_RX_FM BIT(3) +#define ETH_RX_MP BIT(4) +#define ETH_RX_BP BIT(5) +#define ETH_RX_VLT BIT(6) +#define ETH_RX_CF BIT(7) +#define ETH_RX_OVR BIT(8) +#define ETH_RX_CRC BIT(9) +#define ETH_RX_CV BIT(10) +#define ETH_RX_DB BIT(11) +#define ETH_RX_LE BIT(12) +#define ETH_RX_LOR BIT(13) +#define ETH_RX_CES BIT(14) +#define ETH_RX_LEN_BIT 16 +#define ETH_RX_LEN 0xffff0000 + +#define ETH_TX_FD BIT(0) +#define ETH_TX_LD BIT(1) +#define ETH_TX_OEN BIT(2) +#define ETH_TX_PEN BIT(3) +#define ETH_TX_CEN BIT(4) +#define ETH_TX_HEN BIT(5) +#define ETH_TX_TOK BIT(6) +#define ETH_TX_MP BIT(7) +#define ETH_TX_BP BIT(8) +#define ETH_TX_UND BIT(9) +#define ETH_TX_OF BIT(10) +#define ETH_TX_ED BIT(11) +#define ETH_TX_EC BIT(12) +#define ETH_TX_LC BIT(13) +#define ETH_TX_TD BIT(14) +#define ETH_TX_CRC BIT(15) +#define ETH_TX_LE BIT(16) +#define ETH_TX_CC 0x001E0000 + +/* DMA descriptor (in physical memory). */ +struct dma_desc { + u32 control; /* Control. use DMAD_* */ + u32 ca; /* Current Address. */ + u32 devcs; /* Device control and status. */ + u32 link; /* Next descriptor in chain. */ +}; + +#define DMA_DESC_COUNT_BIT 0 +#define DMA_DESC_COUNT_MSK 0x0003ffff +#define DMA_DESC_DS_BIT 20 +#define DMA_DESC_DS_MSK 0x00300000 + +#define DMA_DESC_DEV_CMD_BIT 22 +#define DMA_DESC_DEV_CMD_MSK 0x01c00000 + +/* DMA descriptors interrupts */ +#define DMA_DESC_COF BIT(25) /* Chain on finished */ +#define DMA_DESC_COD BIT(26) /* Chain on done */ +#define DMA_DESC_IOF BIT(27) /* Interrupt on finished */ +#define DMA_DESC_IOD BIT(28) /* Interrupt on done */ +#define DMA_DESC_TERM BIT(29) /* Terminated */ +#define DMA_DESC_DONE BIT(30) /* Done */ +#define DMA_DESC_FINI BIT(31) /* Finished */ + +/* DMA register (within Internal Register Map). */ +struct dma_reg { + u32 dmac; /* Control. */ + u32 dmas; /* Status. */ + u32 dmasm; /* Mask. */ + u32 dmadptr; /* Descriptor pointer. */ + u32 dmandptr; /* Next descriptor pointer. */ +}; + +/* DMA channels specific registers */ +#define DMA_CHAN_RUN_BIT BIT(0) +#define DMA_CHAN_DONE_BIT BIT(1) +#define DMA_CHAN_MODE_BIT BIT(2) +#define DMA_CHAN_MODE_MSK 0x0000000c +#define DMA_CHAN_MODE_AUTO 0 +#define DMA_CHAN_MODE_BURST 1 +#define DMA_CHAN_MODE_XFRT 2 +#define DMA_CHAN_MODE_RSVD 3 +#define DMA_CHAN_ACT_BIT BIT(4) + +/* DMA status registers */ +#define DMA_STAT_FINI BIT(0) +#define DMA_STAT_DONE BIT(1) +#define DMA_STAT_CHAIN BIT(2) +#define DMA_STAT_ERR BIT(3) +#define DMA_STAT_HALT BIT(4) + #define STATION_ADDRESS_HIGH(dev) (((dev)->dev_addr[0] << 8) | \ ((dev)->dev_addr[1])) #define STATION_ADDRESS_LOW(dev) (((dev)->dev_addr[2] << 24) | \ @@ -100,6 +326,7 @@ enum chain_status { desc_empty }; +#define DMA_COUNT(count) ((count) & DMA_DESC_COUNT_MSK) #define IS_DMA_FINISHED(X) (((X) & (DMA_DESC_FINI)) != 0) #define IS_DMA_DONE(X) (((X) & (DMA_DESC_DONE)) != 0) #define RCVPKT_LENGTH(X) (((X) & ETH_RX_LEN) >> ETH_RX_LEN_BIT) @@ -453,14 +680,14 @@ static int korina_rx(struct net_device *dev, int limit) lp->rx_next_done = (lp->rx_next_done + 1) & KORINA_RDS_MASK; rd = &lp->rd_ring[lp->rx_next_done]; - writel(~DMA_STAT_DONE, &lp->rx_dma_regs->dmas); + writel((u32)~DMA_STAT_DONE, &lp->rx_dma_regs->dmas); } dmas = readl(&lp->rx_dma_regs->dmas); if (dmas & DMA_STAT_HALT) { - writel(~(DMA_STAT_HALT | DMA_STAT_ERR), - &lp->rx_dma_regs->dmas); + writel((u32)~(DMA_STAT_HALT | DMA_STAT_ERR), + &lp->rx_dma_regs->dmas); lp->dma_halt_cnt++; rd->devcs = 0; From patchwork Sun Apr 18 22:19:48 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Bogendoerfer X-Patchwork-Id: 12210429 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 253B0C43461 for ; Sun, 18 Apr 2021 22:20:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 08096610EA for ; Sun, 18 Apr 2021 22:20:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236839AbhDRWUc (ORCPT ); Sun, 18 Apr 2021 18:20:32 -0400 Received: from mx2.suse.de ([195.135.220.15]:38360 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235740AbhDRWUY (ORCPT ); Sun, 18 Apr 2021 18:20:24 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id BEE89B187; Sun, 18 Apr 2021 22:19:54 +0000 (UTC) From: Thomas Bogendoerfer To: "David S. Miller" , Jakub Kicinski , Rob Herring , netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org Subject: [PATCH v6 net-next 10/10] dt-bindings: net: korina: Add DT bindings for IDT 79RC3243x SoCs Date: Mon, 19 Apr 2021 00:19:48 +0200 Message-Id: <20210418221949.130779-11-tsbogend@alpha.franken.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210418221949.130779-1-tsbogend@alpha.franken.de> References: <20210418221949.130779-1-tsbogend@alpha.franken.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org Add device tree bindings for ethernet controller integrated into IDT 79RC3243x SoCs. Signed-off-by: Thomas Bogendoerfer --- .../bindings/net/idt,3243x-emac.yaml | 73 +++++++++++++++++++ 1 file changed, 73 insertions(+) create mode 100644 Documentation/devicetree/bindings/net/idt,3243x-emac.yaml diff --git a/Documentation/devicetree/bindings/net/idt,3243x-emac.yaml b/Documentation/devicetree/bindings/net/idt,3243x-emac.yaml new file mode 100644 index 000000000000..11ffc306dd54 --- /dev/null +++ b/Documentation/devicetree/bindings/net/idt,3243x-emac.yaml @@ -0,0 +1,73 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/net/idt,3243x-emac.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: IDT 79rc3243x Ethernet controller + +description: Ethernet controller integrated into IDT 79RC3243x family SoCs + +maintainers: + - Thomas Bogendoerfer + +allOf: + - $ref: ethernet-controller.yaml# + +properties: + compatible: + const: idt,3243x-emac + + reg: + maxItems: 3 + + reg-names: + items: + - const: emac + - const: dma_rx + - const: dma_tx + + interrupts: + items: + - description: RX interrupt + - description: TX interrupt + + interrupt-names: + items: + - const: rx + - const: tx + + clocks: + maxItems: 1 + + clock-names: + items: + - const: mdioclk + +required: + - compatible + - reg + - reg-names + - interrupts + - interrupt-names + +additionalProperties: false + +examples: + - | + + ethernet@60000 { + compatible = "idt,3243x-emac"; + + reg = <0x60000 0x10000>, + <0x40000 0x14>, + <0x40014 0x14>; + reg-names = "emac", "dma_rx", "dma_tx"; + + interrupt-parent = <&rcpic3>; + interrupts = <0>, <1>; + interrupt-names = "rx", "tx"; + + clocks = <&iclk>; + clock-names = "mdioclk"; + };