From patchwork Tue Aug 30 09:55:45 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maxime Chevallier X-Patchwork-Id: 12959024 X-Patchwork-Delegate: kuba@kernel.org 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 61A8CC0502A for ; Tue, 30 Aug 2022 09:56:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229788AbiH3J4e (ORCPT ); Tue, 30 Aug 2022 05:56:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38396 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229854AbiH3J4M (ORCPT ); Tue, 30 Aug 2022 05:56:12 -0400 Received: from relay8-d.mail.gandi.net (relay8-d.mail.gandi.net [217.70.183.201]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EFE7897504; Tue, 30 Aug 2022 02:55:56 -0700 (PDT) Received: (Authenticated sender: maxime.chevallier@bootlin.com) by mail.gandi.net (Postfix) with ESMTPSA id BCC501BF20A; Tue, 30 Aug 2022 09:55:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1661853355; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=92QNogDqBSOd+fyh2WZ4EslJvihsyRihpmylumA1cKU=; b=MDEkHLxjyZt3xp8f8JoBn9KJ2MOH63LcY0uQtjDwKm0adHQBD5tO08g7q+kkegvFyaiSnP 9i0aqTmChqvjhmFxsOuLP+1UHR82VQvq3QiEeBhixoJclsLNAYn2ZTIhkpCZ9vdJByJJ2+ DCFiPo87JKERs/VzmgGppRKnPVWPbmlwccUhXC9H/Y6Yv5qri/H8rBLzp07iCfBDVhnAko R6kgDfthaey+bxlY1Mvd1q0ZqEfQe+0rD4trSbMYp2Zl0+fPH6v2hjVwzTYHsKV6KWNwiB TowJfmFR988GqNl3XKiz+zorVkur0JVzxpeIh0u2Bfc/Y/kz9cq1S3Ar+jUOoQ== From: Maxime Chevallier To: davem@davemloft.net, Rob Herring Cc: Maxime Chevallier , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, thomas.petazzoni@bootlin.com, Andrew Lunn , Jakub Kicinski , Eric Dumazet , Paolo Abeni , Florian Fainelli , Heiner Kallweit , Russell King , linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org Subject: [PATCH net-next v2 1/5] dt-bindings: net: Convert Altera TSE bindings to yaml Date: Tue, 30 Aug 2022 11:55:45 +0200 Message-Id: <20220830095549.120625-2-maxime.chevallier@bootlin.com> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20220830095549.120625-1-maxime.chevallier@bootlin.com> References: <20220830095549.120625-1-maxime.chevallier@bootlin.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org This converts the bindings for the Altera Triple-Speed Ethernet to yaml. Signed-off-by: Maxime Chevallier --- V1->V2: - Removed unnedded maxItems - Added missing minItems - Fixed typos in some properties names - Fixed the mdio subnode definition .../devicetree/bindings/net/altera_tse.txt | 113 ------------- .../devicetree/bindings/net/altr,tse.yaml | 156 ++++++++++++++++++ 2 files changed, 156 insertions(+), 113 deletions(-) delete mode 100644 Documentation/devicetree/bindings/net/altera_tse.txt create mode 100644 Documentation/devicetree/bindings/net/altr,tse.yaml diff --git a/Documentation/devicetree/bindings/net/altera_tse.txt b/Documentation/devicetree/bindings/net/altera_tse.txt deleted file mode 100644 index 1d9148ff5130..000000000000 --- a/Documentation/devicetree/bindings/net/altera_tse.txt +++ /dev/null @@ -1,113 +0,0 @@ -* Altera Triple-Speed Ethernet MAC driver (TSE) - -Required properties: -- compatible: Should be "altr,tse-1.0" for legacy SGDMA based TSE, and should - be "altr,tse-msgdma-1.0" for the preferred MSGDMA based TSE. - ALTR is supported for legacy device trees, but is deprecated. - altr should be used for all new designs. -- reg: Address and length of the register set for the device. It contains - the information of registers in the same order as described by reg-names -- reg-names: Should contain the reg names - "control_port": MAC configuration space region - "tx_csr": xDMA Tx dispatcher control and status space region - "tx_desc": MSGDMA Tx dispatcher descriptor space region - "rx_csr" : xDMA Rx dispatcher control and status space region - "rx_desc": MSGDMA Rx dispatcher descriptor space region - "rx_resp": MSGDMA Rx dispatcher response space region - "s1": SGDMA descriptor memory -- interrupts: Should contain the TSE interrupts and its mode. -- interrupt-names: Should contain the interrupt names - "rx_irq": xDMA Rx dispatcher interrupt - "tx_irq": xDMA Tx dispatcher interrupt -- rx-fifo-depth: MAC receive FIFO buffer depth in bytes -- tx-fifo-depth: MAC transmit FIFO buffer depth in bytes -- phy-mode: See ethernet.txt in the same directory. -- phy-handle: See ethernet.txt in the same directory. -- phy-addr: See ethernet.txt in the same directory. A configuration should - include phy-handle or phy-addr. -- altr,has-supplementary-unicast: - If present, TSE supports additional unicast addresses. - Otherwise additional unicast addresses are not supported. -- altr,has-hash-multicast-filter: - If present, TSE supports a hash based multicast filter. - Otherwise, hash-based multicast filtering is not supported. - -- mdio device tree subnode: When the TSE has a phy connected to its local - mdio, there must be device tree subnode with the following - required properties: - - - compatible: Must be "altr,tse-mdio". - - #address-cells: Must be <1>. - - #size-cells: Must be <0>. - - For each phy on the mdio bus, there must be a node with the following - fields: - - - reg: phy id used to communicate to phy. - - device_type: Must be "ethernet-phy". - -The MAC address will be determined using the optional properties defined in -ethernet.txt. - -Example: - - tse_sub_0_eth_tse_0: ethernet@1,00000000 { - compatible = "altr,tse-msgdma-1.0"; - reg = <0x00000001 0x00000000 0x00000400>, - <0x00000001 0x00000460 0x00000020>, - <0x00000001 0x00000480 0x00000020>, - <0x00000001 0x000004A0 0x00000008>, - <0x00000001 0x00000400 0x00000020>, - <0x00000001 0x00000420 0x00000020>; - reg-names = "control_port", "rx_csr", "rx_desc", "rx_resp", "tx_csr", "tx_desc"; - interrupt-parent = <&hps_0_arm_gic_0>; - interrupts = <0 41 4>, <0 40 4>; - interrupt-names = "rx_irq", "tx_irq"; - rx-fifo-depth = <2048>; - tx-fifo-depth = <2048>; - address-bits = <48>; - max-frame-size = <1500>; - local-mac-address = [ 00 00 00 00 00 00 ]; - phy-mode = "gmii"; - altr,has-supplementary-unicast; - altr,has-hash-multicast-filter; - phy-handle = <&phy0>; - mdio { - compatible = "altr,tse-mdio"; - #address-cells = <1>; - #size-cells = <0>; - phy0: ethernet-phy@0 { - reg = <0x0>; - device_type = "ethernet-phy"; - }; - - phy1: ethernet-phy@1 { - reg = <0x1>; - device_type = "ethernet-phy"; - }; - - }; - }; - - tse_sub_1_eth_tse_0: ethernet@1,00001000 { - compatible = "altr,tse-msgdma-1.0"; - reg = <0x00000001 0x00001000 0x00000400>, - <0x00000001 0x00001460 0x00000020>, - <0x00000001 0x00001480 0x00000020>, - <0x00000001 0x000014A0 0x00000008>, - <0x00000001 0x00001400 0x00000020>, - <0x00000001 0x00001420 0x00000020>; - reg-names = "control_port", "rx_csr", "rx_desc", "rx_resp", "tx_csr", "tx_desc"; - interrupt-parent = <&hps_0_arm_gic_0>; - interrupts = <0 43 4>, <0 42 4>; - interrupt-names = "rx_irq", "tx_irq"; - rx-fifo-depth = <2048>; - tx-fifo-depth = <2048>; - address-bits = <48>; - max-frame-size = <1500>; - local-mac-address = [ 00 00 00 00 00 00 ]; - phy-mode = "gmii"; - altr,has-supplementary-unicast; - altr,has-hash-multicast-filter; - phy-handle = <&phy1>; - }; diff --git a/Documentation/devicetree/bindings/net/altr,tse.yaml b/Documentation/devicetree/bindings/net/altr,tse.yaml new file mode 100644 index 000000000000..1676e13b8c64 --- /dev/null +++ b/Documentation/devicetree/bindings/net/altr,tse.yaml @@ -0,0 +1,156 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/net/altr,tse.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Altera Triple Speed Ethernet MAC driver (TSE) + +maintainers: + - Maxime Chevallier + +allOf: + - $ref: "ethernet-controller.yaml#" + - if: + properties: + compatible: + contains: + enum: + - altr,tse-1.0 + - ALTR,tse-1.0 + then: + properties: + reg: + minItems: 4 + reg-names: + items: + - const: control_port + - const: rx_csr + - const: tx_csr + - const: s1 + + - if: + properties: + compatible: + contains: + enum: + - altr,tse-msgdma-1.0 + then: + properties: + reg: + minItems: 6 + reg-names: + minItems: 6 + items: + - const: control_port + - const: rx_csr + - const: rx_desc + - const: rx_resp + - const: tx_csr + - const: tx_desc + +properties: + compatible: + enum: + - altr,tse-1.0 + - ALTR,tse-1.0 + - altr,tse-msgdma-1.0 + + reg: + minItems: 4 + maxItems: 6 + + reg-names: + minItems: 4 + items: + - const: control_port + - const: rx_csr + - const: rx_desc + - const: rx_resp + - const: tx_csr + - const: tx_desc + - const: s1 + + interrupts: + minItems: 2 + + interrupt-names: + items: + - const: rx_irq + - const: tx_irq + + rx-fifo-depth: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + Depth in bytes of the RX FIFO + + tx-fifo-depth: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + Depth in bytes of the TX FIFO + + altr,has-supplementary-unicast: + type: boolean + description: + If present, TSE supports additional unicast addresses. + + altr,has-hash-multicast-filter: + type: boolean + description: + If present, TSE supports hash based multicast filter. + + mdio: + $ref: mdio.yaml# + unevaluatedProperties: false + description: + Creates and registers an MDIO bus. + + properties: + compatible: + const: altr,tse-mdio + + required: + - compatible + +required: + - compatible + - reg + - interrupts + - rx-fifo-depth + - tx-fifo-depth + +unevaluatedProperties: false + +examples: + - | + tse_sub_1_eth_tse_0: ethernet@1,00001000 { + compatible = "altr,tse-msgdma-1.0"; + reg = <0x00001000 0x00000400>, + <0x00001460 0x00000020>, + <0x00001480 0x00000020>, + <0x000014A0 0x00000008>, + <0x00001400 0x00000020>, + <0x00001420 0x00000020>; + reg-names = "control_port", "rx_csr", "rx_desc", "rx_resp", "tx_csr", "tx_desc"; + interrupt-parent = <&hps_0_arm_gic_0>; + interrupts = <0 43 4>, <0 42 4>; + interrupt-names = "rx_irq", "tx_irq"; + rx-fifo-depth = <2048>; + tx-fifo-depth = <2048>; + max-frame-size = <1500>; + local-mac-address = [ 00 00 00 00 00 00 ]; + phy-mode = "gmii"; + altr,has-supplementary-unicast; + altr,has-hash-multicast-filter; + phy-handle = <&phy1>; + mdio { + compatible = "altr,tse-mdio"; + #address-cells = <1>; + #size-cells = <0>; + phy1: ethernet-phy@1 { + reg = <0x1>; + }; + }; + }; + +... From patchwork Tue Aug 30 09:55:46 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maxime Chevallier X-Patchwork-Id: 12959022 X-Patchwork-Delegate: kuba@kernel.org 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 8917AC0502C for ; Tue, 30 Aug 2022 09:56:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229822AbiH3J4f (ORCPT ); Tue, 30 Aug 2022 05:56:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39040 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229869AbiH3J4M (ORCPT ); Tue, 30 Aug 2022 05:56:12 -0400 Received: from relay8-d.mail.gandi.net (relay8-d.mail.gandi.net [217.70.183.201]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7E465A1D78; Tue, 30 Aug 2022 02:55:59 -0700 (PDT) Received: (Authenticated sender: maxime.chevallier@bootlin.com) by mail.gandi.net (Postfix) with ESMTPSA id 613DB1BF208; Tue, 30 Aug 2022 09:55:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1661853357; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=inPHOWh5jcwFBikJcWTipiErJLZs64xvq0nFt+bXVfI=; b=Y6nX7NoQ7wCE2Fy8wUAztbRf9QImR6J0Swhh98ZCeWuQXLeQudaYdwyHCFcgBApZO6Zq/v 5o+/0N43khwIAktmqAnz/c0xCKPvPM5VDNYhns8g043hum8S4M6C/PX7LD7uHVfNLMq8qD p7sHcix8w4s3UJQVd74/iaPGdRP69W/Ea6JI5JWrfA+/a7Swb02ipuuo/yxgyxgZ+WwxGa vX0QWejjUDZtFjNyzNNanLrRdh/LZHmWZ6+0CZ48rsNPqXAEVAP+Pri93PxC2sMc+5NfkV bUpaj3iZRr+hVT1+5GPf/Fv0lcmSvrBvSChaih4tSaSOrDOG7/5UkwV00XplDQ== From: Maxime Chevallier To: davem@davemloft.net, Rob Herring Cc: Maxime Chevallier , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, thomas.petazzoni@bootlin.com, Andrew Lunn , Jakub Kicinski , Eric Dumazet , Paolo Abeni , Florian Fainelli , Heiner Kallweit , Russell King , linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org Subject: [PATCH net-next v2 2/5] net: altera: tse: cosmetic change to use reverse xmas tree ordering Date: Tue, 30 Aug 2022 11:55:46 +0200 Message-Id: <20220830095549.120625-3-maxime.chevallier@bootlin.com> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20220830095549.120625-1-maxime.chevallier@bootlin.com> References: <20220830095549.120625-1-maxime.chevallier@bootlin.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org This commit is a strictly cosmetic change, to use the reverse xmas tree variable declaration ordering, and introduces no functional changes. Signed-off-by: Maxime Chevallier --- V1->V2 : No changes .../net/ethernet/altera/altera_tse_ethtool.c | 2 +- drivers/net/ethernet/altera/altera_tse_main.c | 43 ++++++++++--------- 2 files changed, 23 insertions(+), 22 deletions(-) diff --git a/drivers/net/ethernet/altera/altera_tse_ethtool.c b/drivers/net/ethernet/altera/altera_tse_ethtool.c index 3081e5874ac5..f0b11a278644 100644 --- a/drivers/net/ethernet/altera/altera_tse_ethtool.c +++ b/drivers/net/ethernet/altera/altera_tse_ethtool.c @@ -199,9 +199,9 @@ static int tse_reglen(struct net_device *dev) static void tse_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *regbuf) { - int i; struct altera_tse_private *priv = netdev_priv(dev); u32 *buf = regbuf; + int i; /* Set version to a known value, so ethtool knows * how to do any special formatting of this data. diff --git a/drivers/net/ethernet/altera/altera_tse_main.c b/drivers/net/ethernet/altera/altera_tse_main.c index 8c5828582c21..930afc9ec833 100644 --- a/drivers/net/ethernet/altera/altera_tse_main.c +++ b/drivers/net/ethernet/altera/altera_tse_main.c @@ -141,10 +141,10 @@ static int altera_tse_mdio_write(struct mii_bus *bus, int mii_id, int regnum, static int altera_tse_mdio_create(struct net_device *dev, unsigned int id) { struct altera_tse_private *priv = netdev_priv(dev); - int ret; struct device_node *mdio_node = NULL; - struct mii_bus *mdio = NULL; struct device_node *child_node = NULL; + struct mii_bus *mdio = NULL; + int ret; for_each_child_of_node(priv->device->of_node, child_node) { if (of_device_is_compatible(child_node, "altr,tse-mdio")) { @@ -236,8 +236,8 @@ static int tse_init_rx_buffer(struct altera_tse_private *priv, static void tse_free_rx_buffer(struct altera_tse_private *priv, struct tse_buffer *rxbuffer) { - struct sk_buff *skb = rxbuffer->skb; dma_addr_t dma_addr = rxbuffer->dma_addr; + struct sk_buff *skb = rxbuffer->skb; if (skb != NULL) { if (dma_addr) @@ -358,6 +358,7 @@ static inline void tse_rx_vlan(struct net_device *dev, struct sk_buff *skb) { struct ethhdr *eth_hdr; u16 vid; + if ((dev->features & NETIF_F_HW_VLAN_CTAG_RX) && !__vlan_get_tag(skb, &vid)) { eth_hdr = (struct ethhdr *)skb->data; @@ -371,10 +372,10 @@ static inline void tse_rx_vlan(struct net_device *dev, struct sk_buff *skb) */ static int tse_rx(struct altera_tse_private *priv, int limit) { - unsigned int count = 0; + unsigned int entry = priv->rx_cons % priv->rx_ring_size; unsigned int next_entry; + unsigned int count = 0; struct sk_buff *skb; - unsigned int entry = priv->rx_cons % priv->rx_ring_size; u32 rxstatus; u16 pktlength; u16 pktstatus; @@ -448,10 +449,10 @@ static int tse_rx(struct altera_tse_private *priv, int limit) static int tse_tx_complete(struct altera_tse_private *priv) { unsigned int txsize = priv->tx_ring_size; - u32 ready; - unsigned int entry; struct tse_buffer *tx_buff; + unsigned int entry; int txcomplete = 0; + u32 ready; spin_lock(&priv->tx_lock); @@ -497,8 +498,8 @@ static int tse_poll(struct napi_struct *napi, int budget) { struct altera_tse_private *priv = container_of(napi, struct altera_tse_private, napi); - int rxcomplete = 0; unsigned long int flags; + int rxcomplete = 0; tse_tx_complete(priv); @@ -561,13 +562,13 @@ static irqreturn_t altera_isr(int irq, void *dev_id) static netdev_tx_t tse_start_xmit(struct sk_buff *skb, struct net_device *dev) { struct altera_tse_private *priv = netdev_priv(dev); + unsigned int nopaged_len = skb_headlen(skb); unsigned int txsize = priv->tx_ring_size; - unsigned int entry; - struct tse_buffer *buffer = NULL; int nfrags = skb_shinfo(skb)->nr_frags; - unsigned int nopaged_len = skb_headlen(skb); + struct tse_buffer *buffer = NULL; netdev_tx_t ret = NETDEV_TX_OK; dma_addr_t dma_addr; + unsigned int entry; spin_lock_bh(&priv->tx_lock); @@ -696,8 +697,8 @@ static void altera_tse_adjust_link(struct net_device *dev) static struct phy_device *connect_local_phy(struct net_device *dev) { struct altera_tse_private *priv = netdev_priv(dev); - struct phy_device *phydev = NULL; char phy_id_fmt[MII_BUS_ID_SIZE + 3]; + struct phy_device *phydev = NULL; if (priv->phy_addr != POLL_PHY) { snprintf(phy_id_fmt, MII_BUS_ID_SIZE + 3, PHY_ID_FMT, @@ -773,8 +774,8 @@ static int altera_tse_phy_get_addr_mdio_create(struct net_device *dev) static int init_phy(struct net_device *dev) { struct altera_tse_private *priv = netdev_priv(dev); - struct phy_device *phydev; struct device_node *phynode; + struct phy_device *phydev; bool fixed_link = false; int rc = 0; @@ -1012,8 +1013,8 @@ static int tse_change_mtu(struct net_device *dev, int new_mtu) static void altera_tse_set_mcfilter(struct net_device *dev) { struct altera_tse_private *priv = netdev_priv(dev); - int i; struct netdev_hw_addr *ha; + int i; /* clear the hash filter */ for (i = 0; i < 64; i++) @@ -1152,9 +1153,9 @@ static int init_sgmii_pcs(struct net_device *dev) static int tse_open(struct net_device *dev) { struct altera_tse_private *priv = netdev_priv(dev); + unsigned long flags; int ret = 0; int i; - unsigned long int flags; /* Reset and configure TSE MAC and probe associated PHY */ ret = priv->dmaops->init_dma(priv); @@ -1265,8 +1266,8 @@ static int tse_open(struct net_device *dev) static int tse_shutdown(struct net_device *dev) { struct altera_tse_private *priv = netdev_priv(dev); - int ret; unsigned long int flags; + int ret; /* Stop the PHY */ if (dev->phydev) @@ -1320,8 +1321,8 @@ static struct net_device_ops altera_tse_netdev_ops = { static int request_and_map(struct platform_device *pdev, const char *name, struct resource **res, void __iomem **ptr) { - struct resource *region; struct device *device = &pdev->dev; + struct resource *region; *res = platform_get_resource_byname(pdev, IORESOURCE_MEM, name); if (*res == NULL) { @@ -1350,13 +1351,13 @@ static int request_and_map(struct platform_device *pdev, const char *name, */ static int altera_tse_probe(struct platform_device *pdev) { - struct net_device *ndev; - int ret = -ENODEV; + const struct of_device_id *of_id = NULL; + struct altera_tse_private *priv; struct resource *control_port; struct resource *dma_res; - struct altera_tse_private *priv; + struct net_device *ndev; void __iomem *descmap; - const struct of_device_id *of_id = NULL; + int ret = -ENODEV; ndev = alloc_etherdev(sizeof(struct altera_tse_private)); if (!ndev) { From patchwork Tue Aug 30 09:55:47 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maxime Chevallier X-Patchwork-Id: 12959025 X-Patchwork-Delegate: kuba@kernel.org 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 BC5DBECAAA1 for ; Tue, 30 Aug 2022 09:57:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229877AbiH3J5N (ORCPT ); Tue, 30 Aug 2022 05:57:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38564 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229767AbiH3J4R (ORCPT ); Tue, 30 Aug 2022 05:56:17 -0400 Received: from relay8-d.mail.gandi.net (relay8-d.mail.gandi.net [217.70.183.201]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D5ED5A98ED; Tue, 30 Aug 2022 02:56:02 -0700 (PDT) Received: (Authenticated sender: maxime.chevallier@bootlin.com) by mail.gandi.net (Postfix) with ESMTPSA id 5BB131BF20D; Tue, 30 Aug 2022 09:55:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1661853358; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=ezfS+y0eNB9VvU5KNZjzsPfNJqrxQFdglyx3bDl252A=; b=osJSM1axTnavZ2e5QNNqDjOkL2DxgX+gYalGr6PRaFJIl9DmUv4u/zxeWdUAwRv7TXElfh INvWot3k/upJpWCl0LyH1BBvAdl4E2Xhf0Sy/47n9I58WG3uvEaWvoQGnwqbWATvWATcJp N9+jg2d9aDDq7dRt2PR4247yREueoLwsjkEwShTm0kXDBczqoDOHulIsbA8NBuZURA6yEv VJLoninaFpEMWEMG959tgPsbNd/PNAL98KA12OYQzw90nVWzYRVOKHbOs4cf4ALwZhPdjj FqvbocPzXH+60AmqJr/4+dtLo1BYFGBOJQ3lg/4nTUowwwECLgWh5Y1LwVKAwQ== From: Maxime Chevallier To: davem@davemloft.net, Rob Herring Cc: Maxime Chevallier , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, thomas.petazzoni@bootlin.com, Andrew Lunn , Jakub Kicinski , Eric Dumazet , Paolo Abeni , Florian Fainelli , Heiner Kallweit , Russell King , linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org Subject: [PATCH net-next v2 3/5] net: pcs: add new PCS driver for altera TSE PCS Date: Tue, 30 Aug 2022 11:55:47 +0200 Message-Id: <20220830095549.120625-4-maxime.chevallier@bootlin.com> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20220830095549.120625-1-maxime.chevallier@bootlin.com> References: <20220830095549.120625-1-maxime.chevallier@bootlin.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org The Altera Triple Speed Ethernet has a SGMII/1000BaseC PCS that can be integrated in several ways. It can either be part of the TSE MAC's address space, accessed through 32 bits accesses on the mapped mdio device 0, or through a dedicated 16 bits register set. This driver allows using the TSE PCS outside of altera TSE's driver, since it can be used standalone by other MACs. Signed-off-by: Maxime Chevallier --- V1->V2 : - Added a pcs_validate() callback to filter interface modes - Added comments on the need for a soft reset at an_restart MAINTAINERS | 7 ++ drivers/net/pcs/Kconfig | 6 ++ drivers/net/pcs/Makefile | 1 + drivers/net/pcs/pcs-altera-tse.c | 171 +++++++++++++++++++++++++++++++ include/linux/pcs-altera-tse.h | 17 +++ 5 files changed, 202 insertions(+) create mode 100644 drivers/net/pcs/pcs-altera-tse.c create mode 100644 include/linux/pcs-altera-tse.h diff --git a/MAINTAINERS b/MAINTAINERS index ba954d5a9a2f..20bcfff8626d 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -878,6 +878,13 @@ L: netdev@vger.kernel.org S: Maintained F: drivers/net/ethernet/altera/ +ALTERA TSE PCS +M: Maxime Chevallier +L: netdev@vger.kernel.org +S: Supported +F: drivers/net/pcs/pcs-altera-tse.c +F: include/linux/pcs-altera-tse.h + ALTERA UART/JTAG UART SERIAL DRIVERS M: Tobias Klauser L: linux-serial@vger.kernel.org diff --git a/drivers/net/pcs/Kconfig b/drivers/net/pcs/Kconfig index 6289b7c765f1..6e7e6c346a3e 100644 --- a/drivers/net/pcs/Kconfig +++ b/drivers/net/pcs/Kconfig @@ -26,4 +26,10 @@ config PCS_RZN1_MIIC on RZ/N1 SoCs. This PCS converts MII to RMII/RGMII or can be set in pass-through mode for MII. +config PCS_ALTERA_TSE + tristate + help + This module provides helper functions for the Altera Triple Speed + Ethernet SGMII PCS, that can be found on the Intel Socfpga family. + endmenu diff --git a/drivers/net/pcs/Makefile b/drivers/net/pcs/Makefile index 0ff5388fcdea..4c780d8f2e98 100644 --- a/drivers/net/pcs/Makefile +++ b/drivers/net/pcs/Makefile @@ -6,3 +6,4 @@ pcs_xpcs-$(CONFIG_PCS_XPCS) := pcs-xpcs.o pcs-xpcs-nxp.o obj-$(CONFIG_PCS_XPCS) += pcs_xpcs.o obj-$(CONFIG_PCS_LYNX) += pcs-lynx.o obj-$(CONFIG_PCS_RZN1_MIIC) += pcs-rzn1-miic.o +obj-$(CONFIG_PCS_ALTERA_TSE) += pcs-altera-tse.o diff --git a/drivers/net/pcs/pcs-altera-tse.c b/drivers/net/pcs/pcs-altera-tse.c new file mode 100644 index 000000000000..ae7688ffc4d7 --- /dev/null +++ b/drivers/net/pcs/pcs-altera-tse.c @@ -0,0 +1,171 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2022 Bootlin + * + * Maxime Chevallier + */ + +#include +#include +#include +#include + +/* SGMII PCS register addresses + */ +#define SGMII_PCS_SCRATCH 0x10 +#define SGMII_PCS_REV 0x11 +#define SGMII_PCS_LINK_TIMER_0 0x12 +#define SGMII_PCS_LINK_TIMER_REG(x) (0x12 + (x)) +#define SGMII_PCS_LINK_TIMER_1 0x13 +#define SGMII_PCS_IF_MODE 0x14 +#define PCS_IF_MODE_SGMII_ENA BIT(0) +#define PCS_IF_MODE_USE_SGMII_AN BIT(1) +#define PCS_IF_MODE_SGMI_SPEED_MASK GENMASK(3, 2) +#define PCS_IF_MODE_SGMI_SPEED_10 (0 << 2) +#define PCS_IF_MODE_SGMI_SPEED_100 (1 << 2) +#define PCS_IF_MODE_SGMI_SPEED_1000 (2 << 2) +#define PCS_IF_MODE_SGMI_HALF_DUPLEX BIT(4) +#define PCS_IF_MODE_SGMI_PHY_AN BIT(5) +#define SGMII_PCS_DIS_READ_TO 0x15 +#define SGMII_PCS_READ_TO 0x16 +#define SGMII_PCS_SW_RESET_TIMEOUT 100 /* usecs */ + +struct altera_tse_pcs { + struct phylink_pcs pcs; + void __iomem *base; + int reg_width; +}; + +static struct altera_tse_pcs *phylink_pcs_to_tse_pcs(struct phylink_pcs *pcs) +{ + return container_of(pcs, struct altera_tse_pcs, pcs); +} + +static u16 tse_pcs_read(struct altera_tse_pcs *tse_pcs, int regnum) +{ + if (tse_pcs->reg_width == 4) + return readl(tse_pcs->base + regnum * 4); + else + return readw(tse_pcs->base + regnum * 2); +} + +static void tse_pcs_write(struct altera_tse_pcs *tse_pcs, int regnum, + u16 value) +{ + if (tse_pcs->reg_width == 4) + writel(value, tse_pcs->base + regnum * 4); + else + writew(value, tse_pcs->base + regnum * 2); +} + +static int tse_pcs_reset(struct altera_tse_pcs *tse_pcs) +{ + int i = 0; + u16 bmcr; + + /* Reset PCS block */ + bmcr = tse_pcs_read(tse_pcs, MII_BMCR); + bmcr |= BMCR_RESET; + tse_pcs_write(tse_pcs, MII_BMCR, bmcr); + + for (i = 0; i < SGMII_PCS_SW_RESET_TIMEOUT; i++) { + if (!(tse_pcs_read(tse_pcs, MII_BMCR) & BMCR_RESET)) + return 0; + udelay(1); + } + + return -ETIMEDOUT; +} + +static int alt_tse_pcs_validate(struct phylink_pcs *pcs, + unsigned long *supported, + const struct phylink_link_state *state) +{ + if (state->interface == PHY_INTERFACE_MODE_SGMII || + state->interface == PHY_INTERFACE_MODE_1000BASEX) + return 1; + + return -EINVAL; +} + +static int alt_tse_pcs_config(struct phylink_pcs *pcs, unsigned int mode, + phy_interface_t interface, + const unsigned long *advertising, + bool permit_pause_to_mac) +{ + struct altera_tse_pcs *tse_pcs = phylink_pcs_to_tse_pcs(pcs); + u32 ctrl, if_mode; + + ctrl = tse_pcs_read(tse_pcs, MII_BMCR); + if_mode = tse_pcs_read(tse_pcs, SGMII_PCS_IF_MODE); + + /* Set link timer to 1.6ms, as per the MegaCore Function User Guide */ + tse_pcs_write(tse_pcs, SGMII_PCS_LINK_TIMER_0, 0x0D40); + tse_pcs_write(tse_pcs, SGMII_PCS_LINK_TIMER_1, 0x03); + + if (interface == PHY_INTERFACE_MODE_SGMII) { + if_mode |= PCS_IF_MODE_USE_SGMII_AN | PCS_IF_MODE_SGMII_ENA; + } else if (interface == PHY_INTERFACE_MODE_1000BASEX) { + if_mode &= ~(PCS_IF_MODE_USE_SGMII_AN | PCS_IF_MODE_SGMII_ENA); + if_mode |= PCS_IF_MODE_SGMI_SPEED_1000; + } + + ctrl |= (BMCR_SPEED1000 | BMCR_FULLDPLX | BMCR_ANENABLE); + + tse_pcs_write(tse_pcs, MII_BMCR, ctrl); + tse_pcs_write(tse_pcs, SGMII_PCS_IF_MODE, if_mode); + + return tse_pcs_reset(tse_pcs); +} + +static void alt_tse_pcs_get_state(struct phylink_pcs *pcs, + struct phylink_link_state *state) +{ + struct altera_tse_pcs *tse_pcs = phylink_pcs_to_tse_pcs(pcs); + u16 bmsr, lpa; + + bmsr = tse_pcs_read(tse_pcs, MII_BMSR); + lpa = tse_pcs_read(tse_pcs, MII_LPA); + + phylink_mii_c22_pcs_decode_state(state, bmsr, lpa); +} + +static void alt_tse_pcs_an_restart(struct phylink_pcs *pcs) +{ + struct altera_tse_pcs *tse_pcs = phylink_pcs_to_tse_pcs(pcs); + u16 bmcr; + + bmcr = tse_pcs_read(tse_pcs, MII_BMCR); + bmcr |= BMCR_ANRESTART; + tse_pcs_write(tse_pcs, MII_BMCR, bmcr); + + /* This PCS seems to require a soft reset to re-sync the AN logic */ + tse_pcs_reset(tse_pcs); +} + +static const struct phylink_pcs_ops alt_tse_pcs_ops = { + .pcs_validate = alt_tse_pcs_validate, + .pcs_get_state = alt_tse_pcs_get_state, + .pcs_config = alt_tse_pcs_config, + .pcs_an_restart = alt_tse_pcs_an_restart, +}; + +struct phylink_pcs *alt_tse_pcs_create(struct net_device *ndev, + void __iomem *pcs_base, int reg_width) +{ + struct altera_tse_pcs *tse_pcs; + + if (reg_width != 4 && reg_width != 2) + return ERR_PTR(-EINVAL); + + tse_pcs = devm_kzalloc(&ndev->dev, sizeof(*tse_pcs), GFP_KERNEL); + if (!tse_pcs) + return ERR_PTR(-ENOMEM); + + tse_pcs->pcs.ops = &alt_tse_pcs_ops; + tse_pcs->base = pcs_base; + tse_pcs->reg_width = reg_width; + + return &tse_pcs->pcs; +} +EXPORT_SYMBOL_GPL(alt_tse_pcs_create); diff --git a/include/linux/pcs-altera-tse.h b/include/linux/pcs-altera-tse.h new file mode 100644 index 000000000000..92ab9f08e835 --- /dev/null +++ b/include/linux/pcs-altera-tse.h @@ -0,0 +1,17 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2022 Bootlin + * + * Maxime Chevallier + */ + +#ifndef __LINUX_PCS_ALTERA_TSE_H +#define __LINUX_PCS_ALTERA_TSE_H + +struct phylink_pcs; +struct net_device; + +struct phylink_pcs *alt_tse_pcs_create(struct net_device *ndev, + void __iomem *pcs_base, int reg_width); + +#endif /* __LINUX_PCS_ALTERA_TSE_H */ From patchwork Tue Aug 30 09:55:48 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maxime Chevallier X-Patchwork-Id: 12959027 X-Patchwork-Delegate: kuba@kernel.org 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 76342ECAAA1 for ; Tue, 30 Aug 2022 09:57:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229886AbiH3J5X (ORCPT ); Tue, 30 Aug 2022 05:57:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38696 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229802AbiH3J4T (ORCPT ); Tue, 30 Aug 2022 05:56:19 -0400 Received: from relay8-d.mail.gandi.net (relay8-d.mail.gandi.net [217.70.183.201]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A04E4A926E; Tue, 30 Aug 2022 02:56:02 -0700 (PDT) Received: (Authenticated sender: maxime.chevallier@bootlin.com) by mail.gandi.net (Postfix) with ESMTPSA id 1F3581BF20C; Tue, 30 Aug 2022 09:55:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1661853360; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Z9hJpFFT1cAizsFGV/S1JG/Ff376zbaCyZ64c7pYykU=; b=EI7oLTLVmhdYtdZ+D2awau6KH1369UXNQvfWevaPLdh4Q+HtCRuP2gnZ7N/2i59CLK++/o uES1HiQi0H0P6wUySkoYi/SrecXAsq5t5RRnCi5U2uqSOUikHpbOIjqMzhAtSl6QdoNzIc gEQfK/CQlL72mD3048CkuTjVIqkUpl5rra7ZivV4ROD9R4J8AVYjnPADbBX4YWX3eXGD1h /+FDHBwOJOnq1qvrl1GKjiHHgmE7TYx/kU7h9obqPnRGBOY5hJwsgCbNFqzr0paPq13/5p cMjZoBhXmVvYwRQ2f5ZtQ4aKFWgOeXeVJRq3o63R/E7HZ0ONYK7lhuwAjS/oyg== From: Maxime Chevallier To: davem@davemloft.net, Rob Herring Cc: Maxime Chevallier , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, thomas.petazzoni@bootlin.com, Andrew Lunn , Jakub Kicinski , Eric Dumazet , Paolo Abeni , Florian Fainelli , Heiner Kallweit , Russell King , linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org Subject: [PATCH net-next v2 4/5] net: altera: tse: convert to phylink Date: Tue, 30 Aug 2022 11:55:48 +0200 Message-Id: <20220830095549.120625-5-maxime.chevallier@bootlin.com> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20220830095549.120625-1-maxime.chevallier@bootlin.com> References: <20220830095549.120625-1-maxime.chevallier@bootlin.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org This commit converts the Altera Triple Speed Ethernet Controller to phylink. This controller supports MII, GMII and RGMII with its MAC, and SGMII + 1000BaseX through a small embedded PCS. The PCS itself has a register set very similar to what is found in a typical 802.3 ethernet PHY, but this register set memory-mapped instead of lying on an mdio bus. Signed-off-by: Maxime Chevallier --- V1->V2 : Removed stray DT makefile patching that had nothing to do with this patch drivers/net/ethernet/altera/Kconfig | 2 + drivers/net/ethernet/altera/altera_tse.h | 19 +- .../net/ethernet/altera/altera_tse_ethtool.c | 20 +- drivers/net/ethernet/altera/altera_tse_main.c | 414 +++++------------- 4 files changed, 141 insertions(+), 314 deletions(-) diff --git a/drivers/net/ethernet/altera/Kconfig b/drivers/net/ethernet/altera/Kconfig index 914e56b91467..dd7fd41ccde5 100644 --- a/drivers/net/ethernet/altera/Kconfig +++ b/drivers/net/ethernet/altera/Kconfig @@ -3,6 +3,8 @@ config ALTERA_TSE tristate "Altera Triple-Speed Ethernet MAC support" depends on HAS_DMA select PHYLIB + select PHYLINK + select PCS_ALTERA_TSE help This driver supports the Altera Triple-Speed (TSE) Ethernet MAC. diff --git a/drivers/net/ethernet/altera/altera_tse.h b/drivers/net/ethernet/altera/altera_tse.h index f17acfb579a0..db5eed06e92d 100644 --- a/drivers/net/ethernet/altera/altera_tse.h +++ b/drivers/net/ethernet/altera/altera_tse.h @@ -27,6 +27,7 @@ #include #include #include +#include #define ALTERA_TSE_SW_RESET_WATCHDOG_CNTR 10000 #define ALTERA_TSE_MAC_FIFO_WIDTH 4 /* TX/RX FIFO width in @@ -109,17 +110,6 @@ #define MAC_CMDCFG_DISABLE_READ_TIMEOUT_GET(v) GET_BIT_VALUE(v, 27) #define MAC_CMDCFG_CNT_RESET_GET(v) GET_BIT_VALUE(v, 31) -/* SGMII PCS register addresses - */ -#define SGMII_PCS_SCRATCH 0x10 -#define SGMII_PCS_REV 0x11 -#define SGMII_PCS_LINK_TIMER_0 0x12 -#define SGMII_PCS_LINK_TIMER_1 0x13 -#define SGMII_PCS_IF_MODE 0x14 -#define SGMII_PCS_DIS_READ_TO 0x15 -#define SGMII_PCS_READ_TO 0x16 -#define SGMII_PCS_SW_RESET_TIMEOUT 100 /* usecs */ - /* MDIO registers within MAC register Space */ struct altera_tse_mdio { @@ -423,6 +413,9 @@ struct altera_tse_private { void __iomem *tx_dma_csr; void __iomem *tx_dma_desc; + /* SGMII PCS address space */ + void __iomem *pcs_base; + /* Rx buffers queue */ struct tse_buffer *rx_ring; u32 rx_cons; @@ -480,6 +473,10 @@ struct altera_tse_private { u32 msg_enable; struct altera_dmaops *dmaops; + + struct phylink *phylink; + struct phylink_config phylink_config; + struct phylink_pcs *pcs; }; /* Function prototypes diff --git a/drivers/net/ethernet/altera/altera_tse_ethtool.c b/drivers/net/ethernet/altera/altera_tse_ethtool.c index f0b11a278644..81313c85833e 100644 --- a/drivers/net/ethernet/altera/altera_tse_ethtool.c +++ b/drivers/net/ethernet/altera/altera_tse_ethtool.c @@ -221,6 +221,22 @@ static void tse_get_regs(struct net_device *dev, struct ethtool_regs *regs, buf[i] = csrrd32(priv->mac_dev, i * 4); } +static int tse_ethtool_set_link_ksettings(struct net_device *dev, + const struct ethtool_link_ksettings *cmd) +{ + struct altera_tse_private *priv = netdev_priv(dev); + + return phylink_ethtool_ksettings_set(priv->phylink, cmd); +} + +static int tse_ethtool_get_link_ksettings(struct net_device *dev, + struct ethtool_link_ksettings *cmd) +{ + struct altera_tse_private *priv = netdev_priv(dev); + + return phylink_ethtool_ksettings_get(priv->phylink, cmd); +} + static const struct ethtool_ops tse_ethtool_ops = { .get_drvinfo = tse_get_drvinfo, .get_regs_len = tse_reglen, @@ -231,8 +247,8 @@ static const struct ethtool_ops tse_ethtool_ops = { .get_ethtool_stats = tse_fill_stats, .get_msglevel = tse_get_msglevel, .set_msglevel = tse_set_msglevel, - .get_link_ksettings = phy_ethtool_get_link_ksettings, - .set_link_ksettings = phy_ethtool_set_link_ksettings, + .get_link_ksettings = tse_ethtool_get_link_ksettings, + .set_link_ksettings = tse_ethtool_set_link_ksettings, .get_ts_info = ethtool_op_get_ts_info, }; diff --git a/drivers/net/ethernet/altera/altera_tse_main.c b/drivers/net/ethernet/altera/altera_tse_main.c index 930afc9ec833..89ae6d1623aa 100644 --- a/drivers/net/ethernet/altera/altera_tse_main.c +++ b/drivers/net/ethernet/altera/altera_tse_main.c @@ -32,6 +32,7 @@ #include #include #include +#include #include #include #include @@ -86,27 +87,6 @@ static inline u32 tse_tx_avail(struct altera_tse_private *priv) return priv->tx_cons + priv->tx_ring_size - priv->tx_prod - 1; } -/* PCS Register read/write functions - */ -static u16 sgmii_pcs_read(struct altera_tse_private *priv, int regnum) -{ - return csrrd32(priv->mac_dev, - tse_csroffs(mdio_phy0) + regnum * 4) & 0xffff; -} - -static void sgmii_pcs_write(struct altera_tse_private *priv, int regnum, - u16 value) -{ - csrwr32(value, priv->mac_dev, tse_csroffs(mdio_phy0) + regnum * 4); -} - -/* Check PCS scratch memory */ -static int sgmii_pcs_scratch_test(struct altera_tse_private *priv, u16 value) -{ - sgmii_pcs_write(priv, SGMII_PCS_SCRATCH, value); - return (sgmii_pcs_read(priv, SGMII_PCS_SCRATCH) == value); -} - /* MDIO specific functions */ static int altera_tse_mdio_read(struct mii_bus *bus, int mii_id, int regnum) @@ -620,117 +600,6 @@ static netdev_tx_t tse_start_xmit(struct sk_buff *skb, struct net_device *dev) return ret; } -/* Called every time the controller might need to be made - * aware of new link state. The PHY code conveys this - * information through variables in the phydev structure, and this - * function converts those variables into the appropriate - * register values, and can bring down the device if needed. - */ -static void altera_tse_adjust_link(struct net_device *dev) -{ - struct altera_tse_private *priv = netdev_priv(dev); - struct phy_device *phydev = dev->phydev; - int new_state = 0; - - /* only change config if there is a link */ - spin_lock(&priv->mac_cfg_lock); - if (phydev->link) { - /* Read old config */ - u32 cfg_reg = ioread32(&priv->mac_dev->command_config); - - /* Check duplex */ - if (phydev->duplex != priv->oldduplex) { - new_state = 1; - if (!(phydev->duplex)) - cfg_reg |= MAC_CMDCFG_HD_ENA; - else - cfg_reg &= ~MAC_CMDCFG_HD_ENA; - - netdev_dbg(priv->dev, "%s: Link duplex = 0x%x\n", - dev->name, phydev->duplex); - - priv->oldduplex = phydev->duplex; - } - - /* Check speed */ - if (phydev->speed != priv->oldspeed) { - new_state = 1; - switch (phydev->speed) { - case 1000: - cfg_reg |= MAC_CMDCFG_ETH_SPEED; - cfg_reg &= ~MAC_CMDCFG_ENA_10; - break; - case 100: - cfg_reg &= ~MAC_CMDCFG_ETH_SPEED; - cfg_reg &= ~MAC_CMDCFG_ENA_10; - break; - case 10: - cfg_reg &= ~MAC_CMDCFG_ETH_SPEED; - cfg_reg |= MAC_CMDCFG_ENA_10; - break; - default: - if (netif_msg_link(priv)) - netdev_warn(dev, "Speed (%d) is not 10/100/1000!\n", - phydev->speed); - break; - } - priv->oldspeed = phydev->speed; - } - iowrite32(cfg_reg, &priv->mac_dev->command_config); - - if (!priv->oldlink) { - new_state = 1; - priv->oldlink = 1; - } - } else if (priv->oldlink) { - new_state = 1; - priv->oldlink = 0; - priv->oldspeed = 0; - priv->oldduplex = -1; - } - - if (new_state && netif_msg_link(priv)) - phy_print_status(phydev); - - spin_unlock(&priv->mac_cfg_lock); -} -static struct phy_device *connect_local_phy(struct net_device *dev) -{ - struct altera_tse_private *priv = netdev_priv(dev); - char phy_id_fmt[MII_BUS_ID_SIZE + 3]; - struct phy_device *phydev = NULL; - - if (priv->phy_addr != POLL_PHY) { - snprintf(phy_id_fmt, MII_BUS_ID_SIZE + 3, PHY_ID_FMT, - priv->mdio->id, priv->phy_addr); - - netdev_dbg(dev, "trying to attach to %s\n", phy_id_fmt); - - phydev = phy_connect(dev, phy_id_fmt, &altera_tse_adjust_link, - priv->phy_iface); - if (IS_ERR(phydev)) { - netdev_err(dev, "Could not attach to PHY\n"); - phydev = NULL; - } - - } else { - int ret; - phydev = phy_find_first(priv->mdio); - if (phydev == NULL) { - netdev_err(dev, "No PHY found\n"); - return phydev; - } - - ret = phy_connect_direct(dev, phydev, &altera_tse_adjust_link, - priv->phy_iface); - if (ret != 0) { - netdev_err(dev, "Could not attach to PHY\n"); - phydev = NULL; - } - } - return phydev; -} - static int altera_tse_phy_get_addr_mdio_create(struct net_device *dev) { struct altera_tse_private *priv = netdev_priv(dev); @@ -769,91 +638,6 @@ static int altera_tse_phy_get_addr_mdio_create(struct net_device *dev) return 0; } -/* Initialize driver's PHY state, and attach to the PHY - */ -static int init_phy(struct net_device *dev) -{ - struct altera_tse_private *priv = netdev_priv(dev); - struct device_node *phynode; - struct phy_device *phydev; - bool fixed_link = false; - int rc = 0; - - /* Avoid init phy in case of no phy present */ - if (!priv->phy_iface) - return 0; - - priv->oldlink = 0; - priv->oldspeed = 0; - priv->oldduplex = -1; - - phynode = of_parse_phandle(priv->device->of_node, "phy-handle", 0); - - if (!phynode) { - /* check if a fixed-link is defined in device-tree */ - if (of_phy_is_fixed_link(priv->device->of_node)) { - rc = of_phy_register_fixed_link(priv->device->of_node); - if (rc < 0) { - netdev_err(dev, "cannot register fixed PHY\n"); - return rc; - } - - /* In the case of a fixed PHY, the DT node associated - * to the PHY is the Ethernet MAC DT node. - */ - phynode = of_node_get(priv->device->of_node); - fixed_link = true; - - netdev_dbg(dev, "fixed-link detected\n"); - phydev = of_phy_connect(dev, phynode, - &altera_tse_adjust_link, - 0, priv->phy_iface); - } else { - netdev_dbg(dev, "no phy-handle found\n"); - if (!priv->mdio) { - netdev_err(dev, "No phy-handle nor local mdio specified\n"); - return -ENODEV; - } - phydev = connect_local_phy(dev); - } - } else { - netdev_dbg(dev, "phy-handle found\n"); - phydev = of_phy_connect(dev, phynode, - &altera_tse_adjust_link, 0, priv->phy_iface); - } - of_node_put(phynode); - - if (!phydev) { - netdev_err(dev, "Could not find the PHY\n"); - if (fixed_link) - of_phy_deregister_fixed_link(priv->device->of_node); - return -ENODEV; - } - - /* Stop Advertising 1000BASE Capability if interface is not GMII - */ - if ((priv->phy_iface == PHY_INTERFACE_MODE_MII) || - (priv->phy_iface == PHY_INTERFACE_MODE_RMII)) - phy_set_max_speed(phydev, SPEED_100); - - /* Broken HW is sometimes missing the pull-up resistor on the - * MDIO line, which results in reads to non-existent devices returning - * 0 rather than 0xffff. Catch this here and treat 0 as a non-existent - * device as well. If a fixed-link is used the phy_id is always 0. - * Note: phydev->phy_id is the result of reading the UID PHY registers. - */ - if ((phydev->phy_id == 0) && !fixed_link) { - netdev_err(dev, "Bad PHY UID 0x%08x\n", phydev->phy_id); - phy_disconnect(phydev); - return -ENODEV; - } - - netdev_dbg(dev, "attached to PHY %d UID 0x%08x Link = %d\n", - phydev->mdio.addr, phydev->phy_id, phydev->link); - - return 0; -} - static void tse_update_mac_addr(struct altera_tse_private *priv, const u8 *addr) { u32 msb; @@ -1088,66 +872,6 @@ static void tse_set_rx_mode(struct net_device *dev) spin_unlock(&priv->mac_cfg_lock); } -/* Initialise (if necessary) the SGMII PCS component - */ -static int init_sgmii_pcs(struct net_device *dev) -{ - struct altera_tse_private *priv = netdev_priv(dev); - int n; - unsigned int tmp_reg = 0; - - if (priv->phy_iface != PHY_INTERFACE_MODE_SGMII) - return 0; /* Nothing to do, not in SGMII mode */ - - /* The TSE SGMII PCS block looks a little like a PHY, it is - * mapped into the zeroth MDIO space of the MAC and it has - * ID registers like a PHY would. Sadly this is often - * configured to zeroes, so don't be surprised if it does - * show 0x00000000. - */ - - if (sgmii_pcs_scratch_test(priv, 0x0000) && - sgmii_pcs_scratch_test(priv, 0xffff) && - sgmii_pcs_scratch_test(priv, 0xa5a5) && - sgmii_pcs_scratch_test(priv, 0x5a5a)) { - netdev_info(dev, "PCS PHY ID: 0x%04x%04x\n", - sgmii_pcs_read(priv, MII_PHYSID1), - sgmii_pcs_read(priv, MII_PHYSID2)); - } else { - netdev_err(dev, "SGMII PCS Scratch memory test failed.\n"); - return -ENOMEM; - } - - /* Starting on page 5-29 of the MegaCore Function User Guide - * Set SGMII Link timer to 1.6ms - */ - sgmii_pcs_write(priv, SGMII_PCS_LINK_TIMER_0, 0x0D40); - sgmii_pcs_write(priv, SGMII_PCS_LINK_TIMER_1, 0x03); - - /* Enable SGMII Interface and Enable SGMII Auto Negotiation */ - sgmii_pcs_write(priv, SGMII_PCS_IF_MODE, 0x3); - - /* Enable Autonegotiation */ - tmp_reg = sgmii_pcs_read(priv, MII_BMCR); - tmp_reg |= (BMCR_SPEED1000 | BMCR_FULLDPLX | BMCR_ANENABLE); - sgmii_pcs_write(priv, MII_BMCR, tmp_reg); - - /* Reset PCS block */ - tmp_reg |= BMCR_RESET; - sgmii_pcs_write(priv, MII_BMCR, tmp_reg); - for (n = 0; n < SGMII_PCS_SW_RESET_TIMEOUT; n++) { - if (!(sgmii_pcs_read(priv, MII_BMCR) & BMCR_RESET)) { - netdev_info(dev, "SGMII PCS block initialised OK\n"); - return 0; - } - udelay(1); - } - - /* We failed to reset the block, return a timeout */ - netdev_err(dev, "SGMII PCS block reset failed.\n"); - return -ETIMEDOUT; -} - /* Open and initialize the interface */ static int tse_open(struct net_device *dev) @@ -1172,14 +896,6 @@ static int tse_open(struct net_device *dev) netdev_warn(dev, "TSE revision %x\n", priv->revision); spin_lock(&priv->mac_cfg_lock); - /* no-op if MAC not operating in SGMII mode*/ - ret = init_sgmii_pcs(dev); - if (ret) { - netdev_err(dev, - "Cannot init the SGMII PCS (error: %d)\n", ret); - spin_unlock(&priv->mac_cfg_lock); - goto phy_error; - } ret = reset_mac(priv); /* Note that reset_mac will fail if the clocks are gated by the PHY @@ -1237,8 +953,12 @@ static int tse_open(struct net_device *dev) spin_unlock_irqrestore(&priv->rxdma_irq_lock, flags); - if (dev->phydev) - phy_start(dev->phydev); + ret = phylink_of_phy_connect(priv->phylink, priv->device->of_node, 0); + if (ret) { + netdev_err(dev, "could not connect phylink (%d)\n", ret); + goto tx_request_irq_error; + } + phylink_start(priv->phylink); napi_enable(&priv->napi); netif_start_queue(dev); @@ -1269,10 +989,7 @@ static int tse_shutdown(struct net_device *dev) unsigned long int flags; int ret; - /* Stop the PHY */ - if (dev->phydev) - phy_stop(dev->phydev); - + phylink_stop(priv->phylink); netif_stop_queue(dev); napi_disable(&priv->napi); @@ -1318,6 +1035,74 @@ static struct net_device_ops altera_tse_netdev_ops = { .ndo_validate_addr = eth_validate_addr, }; +static void alt_tse_mac_an_restart(struct phylink_config *config) +{ +} + +static void alt_tse_mac_config(struct phylink_config *config, unsigned int mode, + const struct phylink_link_state *state) +{ + struct net_device *ndev = to_net_dev(config->dev); + struct altera_tse_private *priv = netdev_priv(ndev); + + spin_lock(&priv->mac_cfg_lock); + reset_mac(priv); + tse_set_mac(priv, true); + spin_unlock(&priv->mac_cfg_lock); +} + +static void alt_tse_mac_link_down(struct phylink_config *config, + unsigned int mode, phy_interface_t interface) +{ +} + +static void alt_tse_mac_link_up(struct phylink_config *config, + struct phy_device *phy, unsigned int mode, + phy_interface_t interface, int speed, + int duplex, bool tx_pause, bool rx_pause) +{ + struct net_device *ndev = to_net_dev(config->dev); + struct altera_tse_private *priv = netdev_priv(ndev); + u32 ctrl; + + ctrl = csrrd32(priv->mac_dev, tse_csroffs(command_config)); + ctrl &= ~(MAC_CMDCFG_ENA_10 | MAC_CMDCFG_ETH_SPEED | MAC_CMDCFG_HD_ENA); + + if (duplex == DUPLEX_HALF) + ctrl |= MAC_CMDCFG_HD_ENA; + + if (speed == SPEED_1000) + ctrl |= MAC_CMDCFG_ETH_SPEED; + else if (speed == SPEED_10) + ctrl |= MAC_CMDCFG_ENA_10; + + spin_lock(&priv->mac_cfg_lock); + csrwr32(ctrl, priv->mac_dev, tse_csroffs(command_config)); + spin_unlock(&priv->mac_cfg_lock); +} + +static struct phylink_pcs *alt_tse_select_pcs(struct phylink_config *config, + phy_interface_t interface) +{ + struct net_device *ndev = to_net_dev(config->dev); + struct altera_tse_private *priv = netdev_priv(ndev); + + if (interface == PHY_INTERFACE_MODE_SGMII || + interface == PHY_INTERFACE_MODE_1000BASEX) + return priv->pcs; + else + return NULL; +} + +static const struct phylink_mac_ops alt_tse_phylink_ops = { + .validate = phylink_generic_validate, + .mac_an_restart = alt_tse_mac_an_restart, + .mac_config = alt_tse_mac_config, + .mac_link_down = alt_tse_mac_link_down, + .mac_link_up = alt_tse_mac_link_up, + .mac_select_pcs = alt_tse_select_pcs, +}; + static int request_and_map(struct platform_device *pdev, const char *name, struct resource **res, void __iomem **ptr) { @@ -1355,8 +1140,10 @@ static int altera_tse_probe(struct platform_device *pdev) struct altera_tse_private *priv; struct resource *control_port; struct resource *dma_res; + struct resource *pcs_res; struct net_device *ndev; void __iomem *descmap; + int pcs_reg_width = 2; int ret = -ENODEV; ndev = alloc_etherdev(sizeof(struct altera_tse_private)); @@ -1468,6 +1255,17 @@ static int altera_tse_probe(struct platform_device *pdev) if (ret) goto err_free_netdev; + /* SGMII PCS address space. The location can vary depending on how the + * IP is integrated. We can have a resource dedicated to it at a specific + * address space, but if it's not the case, we fallback to the mdiophy0 + * from the MAC's address space + */ + ret = request_and_map(pdev, "pcs", &pcs_res, + &priv->pcs_base); + if (ret) { + priv->pcs_base = priv->mac_dev + tse_csroffs(mdio_phy0); + pcs_reg_width = 4; + } /* Rx IRQ */ priv->rx_irq = platform_get_irq_byname(pdev, "rx_irq"); @@ -1591,11 +1389,31 @@ static int altera_tse_probe(struct platform_device *pdev) (unsigned long) control_port->start, priv->rx_irq, priv->tx_irq); - ret = init_phy(ndev); - if (ret != 0) { - netdev_err(ndev, "Cannot attach to PHY (error: %d)\n", ret); + priv->pcs = alt_tse_pcs_create(ndev, priv->pcs_base, pcs_reg_width); + + priv->phylink_config.dev = &ndev->dev; + priv->phylink_config.type = PHYLINK_NETDEV; + priv->phylink_config.mac_capabilities = MAC_SYM_PAUSE | MAC_10 | + MAC_100 | MAC_1000FD; + + phy_interface_set_rgmii(priv->phylink_config.supported_interfaces); + __set_bit(PHY_INTERFACE_MODE_MII, + priv->phylink_config.supported_interfaces); + __set_bit(PHY_INTERFACE_MODE_GMII, + priv->phylink_config.supported_interfaces); + __set_bit(PHY_INTERFACE_MODE_SGMII, + priv->phylink_config.supported_interfaces); + __set_bit(PHY_INTERFACE_MODE_1000BASEX, + priv->phylink_config.supported_interfaces); + + priv->phylink = phylink_create(&priv->phylink_config, + of_fwnode_handle(priv->device->of_node), + priv->phy_iface, &alt_tse_phylink_ops); + if (IS_ERR(priv->phylink)) { + dev_err(&pdev->dev, "failed to create phylink\n"); goto err_init_phy; } + return 0; err_init_phy: @@ -1615,16 +1433,10 @@ static int altera_tse_remove(struct platform_device *pdev) struct net_device *ndev = platform_get_drvdata(pdev); struct altera_tse_private *priv = netdev_priv(ndev); - if (ndev->phydev) { - phy_disconnect(ndev->phydev); - - if (of_phy_is_fixed_link(priv->device->of_node)) - of_phy_deregister_fixed_link(priv->device->of_node); - } - platform_set_drvdata(pdev, NULL); altera_tse_mdio_destroy(ndev); unregister_netdev(ndev); + phylink_destroy(priv->phylink); free_netdev(ndev); return 0; From patchwork Tue Aug 30 09:55:49 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maxime Chevallier X-Patchwork-Id: 12959026 X-Patchwork-Delegate: kuba@kernel.org 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 8B646C0502F for ; Tue, 30 Aug 2022 09:57:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229831AbiH3J5W (ORCPT ); Tue, 30 Aug 2022 05:57:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39302 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229884AbiH3J4T (ORCPT ); Tue, 30 Aug 2022 05:56:19 -0400 Received: from relay8-d.mail.gandi.net (relay8-d.mail.gandi.net [217.70.183.201]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C11BF6110D; Tue, 30 Aug 2022 02:56:06 -0700 (PDT) Received: (Authenticated sender: maxime.chevallier@bootlin.com) by mail.gandi.net (Postfix) with ESMTPSA id 9CDD81BF203; Tue, 30 Aug 2022 09:56:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1661853362; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=2upS5x8bELO5egxRtlEvOnCPCGAo4dfN/QbP9X8KiYE=; b=GW+3p7KS+9LSLOxT1YwnCCIJr7c5phma1YIsrTPD/KmfblOk0FF2a4l5KQ2ZY5sc2J9qyT YRPicnhAaKDK2lO5zQTb8CpwmqxwtUjDdgvIc0VLggtGL3Qw9SvngDfRpYaLwKUnNYspWb kZU2Kq/QDhux2ODYhNgWsr22cHgWJ+QfLID9U0tfeYAIKkAqdoIYt0bMkWmoFm1/ReuVSF lBvHa6LcJ+o0w1U2EMq9fn8vqXZnQAUVWrAuAGXfl+giCr5JI2+FvakjslgGMOZX5m4kHe rpfBGz6+F+dl5KGZz3Ygoql+qfgpxnU3nhrTiREorxO7GAtcNK4OZI/MWBUWEg== From: Maxime Chevallier To: davem@davemloft.net, Rob Herring Cc: Maxime Chevallier , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, thomas.petazzoni@bootlin.com, Andrew Lunn , Jakub Kicinski , Eric Dumazet , Paolo Abeni , Florian Fainelli , Heiner Kallweit , Russell King , linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org Subject: [PATCH net-next v2 5/5] dt-bindings: net: altera: tse: add an optional pcs register range Date: Tue, 30 Aug 2022 11:55:49 +0200 Message-Id: <20220830095549.120625-6-maxime.chevallier@bootlin.com> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20220830095549.120625-1-maxime.chevallier@bootlin.com> References: <20220830095549.120625-1-maxime.chevallier@bootlin.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org Some implementations of the TSE have their PCS as an external bloc, exposed at its own register range. Document this, and add a new example showing a case using the pcs and the new phylink conversion to connect an sfp port to a TSE mac. Signed-off-by: Maxime Chevallier --- V1->V2 : - Fixed example .../devicetree/bindings/net/altr,tse.yaml | 29 ++++++++++++++++++- 1 file changed, 28 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/net/altr,tse.yaml b/Documentation/devicetree/bindings/net/altr,tse.yaml index 1676e13b8c64..4b314861a831 100644 --- a/Documentation/devicetree/bindings/net/altr,tse.yaml +++ b/Documentation/devicetree/bindings/net/altr,tse.yaml @@ -39,6 +39,7 @@ allOf: properties: reg: minItems: 6 + maxItems: 7 reg-names: minItems: 6 items: @@ -48,6 +49,7 @@ allOf: - const: rx_resp - const: tx_csr - const: tx_desc + - const: pcs properties: compatible: @@ -58,7 +60,7 @@ properties: reg: minItems: 4 - maxItems: 6 + maxItems: 7 reg-names: minItems: 4 @@ -69,6 +71,7 @@ properties: - const: rx_resp - const: tx_csr - const: tx_desc + - const: pcs - const: s1 interrupts: @@ -122,6 +125,30 @@ required: unevaluatedProperties: false examples: + - | + tse_sub_0: ethernet@c0100000 { + compatible = "altr,tse-msgdma-1.0"; + reg = <0xc0100000 0x00000400>, + <0xc0101000 0x00000020>, + <0xc0102000 0x00000020>, + <0xc0103000 0x00000008>, + <0xc0104000 0x00000020>, + <0xc0105000 0x00000020>, + <0xc0106000 0x00000100>; + reg-names = "control_port", "rx_csr", "rx_desc", "rx_resp", "tx_csr", "tx_desc", "pcs"; + interrupt-parent = <&intc>; + interrupts = <0 44 4>,<0 45 4>; + interrupt-names = "rx_irq","tx_irq"; + rx-fifo-depth = <2048>; + tx-fifo-depth = <2048>; + max-frame-size = <1500>; + local-mac-address = [ 00 0C ED 00 00 02 ]; + altr,has-supplementary-unicast; + altr,has-hash-multicast-filter; + sfp = <&sfp0>; + phy-mode = "sgmii"; + managed = "in-band-status"; + }; - | tse_sub_1_eth_tse_0: ethernet@1,00001000 { compatible = "altr,tse-msgdma-1.0";