lantiq: add Linux 5.4 support as testing kernel version

Switch to the mainline Lantiq PCIe PHY driver and update the vr9.dtsi
accordingly.

The Lantiq IRQ SMP support added upstream required changes to the SoC
dtsi as well.

Following changes are made to the Lantiq kernel patches:

  0005-lantiq_etop-pass-struct-device-to-DMA-API-functions.patch
  0006-MIPS-lantiq-pass-struct-device-to-DMA-API-functions.patch
    applied upstream

  0008-MIPS-lantiq-backport-old-timer-code.patch
    access_ok API update because it lost it's type (which was the first)
    parameter in upstream commit 96d4f267e40f95 ("Remove 'type' argument
    from access_ok() function")

  0024-MIPS-lantiq-autoselect-soc-rev-matching-fw.patch
    merged into 0026-MIPS-lantiq-Add-GPHY-Firmware-loader.patch

  0024-MIPS-lantiq-revert-DSA-switch-driver-PMU-clock-chang.patch
    revert upstream changes required for upstream xrx200 ethernet and
    xrx200 (DSA) switch driver but breaking our driver

  0026-MIPS-lantiq-Add-GPHY-Firmware-loader.patch
    required for our driver but dropped upstream, add former upstream
    version

  0028-NET-lantiq-various-etop-fixes.patch
    now has to use the phy_set_max_speed API instead of modifying
    phydev->supported. Also call ltq_dma_enable_irq() in
    ltq_etop_open() based on upstream commit cc973aecf0b054 ("MIPS:
    lantiq: Do not enable IRQs in dma open")

Signed-off-by: Mathias Kresin <dev@kresin.me>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>

1 files changed, 44 insertions, 56 deletions

diff --git a/target/linux/lantiq/patches-5.4/0028-NET-lantiq-various-etop-fixes.patch b/target/linux/lantiq/patches-5.4/0028-NET-lantiq-various-etop-fixes.patch
index a336af8a3c..094496a16d 100644
--- a/target/linux/lantiq/patches-5.4/0028-NET-lantiq-various-etop-fixes.patch
+++ b/target/linux/lantiq/patches-5.4/0028-NET-lantiq-various-etop-fixes.patch
@@ -10,16 +10,16 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
 
 --- a/drivers/net/ethernet/lantiq_etop.c
 +++ b/drivers/net/ethernet/lantiq_etop.c
-@@ -11,7 +11,7 @@
-  *   You should have received a copy of the GNU General Public License
-  *   along with this program; if not, see <http://www.gnu.org/licenses/>.
+@@ -1,7 +1,7 @@
+ // SPDX-License-Identifier: GPL-2.0-only
+ /*
   *
 - *   Copyright (C) 2011 John Crispin <blogic@openwrt.org>
 + *   Copyright (C) 2011-12 John Crispin <blogic@openwrt.org>
   */
  
  #include <linux/kernel.h>
-@@ -30,11 +30,16 @@
+@@ -20,11 +20,16 @@
  #include <linux/mm.h>
  #include <linux/platform_device.h>
  #include <linux/ethtool.h>
@@ -36,7 +36,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
  
  #include <asm/checksum.h>
  
-@@ -42,7 +47,7 @@
+@@ -32,7 +37,7 @@
  #include <xway_dma.h>
  #include <lantiq_platform.h>
  
@@ -45,7 +45,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
  #define MDIO_REQUEST		0x80000000
  #define MDIO_READ		0x40000000
  #define MDIO_ADDR_MASK		0x1f
-@@ -51,44 +56,91 @@
+@@ -41,44 +46,91 @@
  #define MDIO_REG_OFFSET		0x10
  #define MDIO_VAL_MASK		0xffff
  
@@ -152,7 +152,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
  	struct net_device *netdev;
  	struct napi_struct napi;
  	struct ltq_dma_channel dma;
-@@ -98,23 +150,36 @@ struct ltq_etop_chan {
+@@ -88,23 +140,36 @@ struct ltq_etop_chan {
  struct ltq_etop_priv {
  	struct net_device *netdev;
  	struct platform_device *pdev;
@@ -194,7 +194,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
  	if (!ch->skb[ch->dma.desc])
  		return -ENOMEM;
  	ch->dma.desc_base[ch->dma.desc].addr = dma_map_single(&priv->pdev->dev,
-@@ -149,8 +214,11 @@ ltq_etop_hw_receive(struct ltq_etop_chan
+@@ -139,8 +204,11 @@ ltq_etop_hw_receive(struct ltq_etop_chan
  	spin_unlock_irqrestore(&priv->lock, flags);
  
  	skb_put(skb, len);
@@ -206,7 +206,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
  }
  
  static int
-@@ -158,7 +226,9 @@ ltq_etop_poll_rx(struct napi_struct *nap
+@@ -148,7 +216,9 @@ ltq_etop_poll_rx(struct napi_struct *nap
  {
  	struct ltq_etop_chan *ch = container_of(napi,
  				struct ltq_etop_chan, napi);
@@ -216,7 +216,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
  
  	while (work_done < budget) {
  		struct ltq_dma_desc *desc = &ch->dma.desc_base[ch->dma.desc];
-@@ -170,7 +240,9 @@ ltq_etop_poll_rx(struct napi_struct *nap
+@@ -160,7 +230,9 @@ ltq_etop_poll_rx(struct napi_struct *nap
  	}
  	if (work_done < budget) {
  		napi_complete_done(&ch->napi, work_done);
@@ -226,7 +226,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
  	}
  	return work_done;
  }
-@@ -182,12 +254,14 @@ ltq_etop_poll_tx(struct napi_struct *nap
+@@ -172,12 +244,14 @@ ltq_etop_poll_tx(struct napi_struct *nap
  		container_of(napi, struct ltq_etop_chan, napi);
  	struct ltq_etop_priv *priv = netdev_priv(ch->netdev);
  	struct netdev_queue *txq =
@@ -242,7 +242,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
  		dev_kfree_skb_any(ch->skb[ch->tx_free]);
  		ch->skb[ch->tx_free] = NULL;
  		memset(&ch->dma.desc_base[ch->tx_free], 0,
-@@ -200,7 +274,9 @@ ltq_etop_poll_tx(struct napi_struct *nap
+@@ -190,7 +264,9 @@ ltq_etop_poll_tx(struct napi_struct *nap
  	if (netif_tx_queue_stopped(txq))
  		netif_tx_start_queue(txq);
  	napi_complete(&ch->napi);
@@ -252,7 +252,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
  	return 1;
  }
  
-@@ -208,9 +284,10 @@ static irqreturn_t
+@@ -198,9 +274,10 @@ static irqreturn_t
  ltq_etop_dma_irq(int irq, void *_priv)
  {
  	struct ltq_etop_priv *priv = _priv;
@@ -266,7 +266,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
  	return IRQ_HANDLED;
  }
  
-@@ -222,7 +299,7 @@ ltq_etop_free_channel(struct net_device
+@@ -212,7 +289,7 @@ ltq_etop_free_channel(struct net_device
  	ltq_dma_free(&ch->dma);
  	if (ch->dma.irq)
  		free_irq(ch->dma.irq, priv);
@@ -275,7 +275,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
  		int desc;
  		for (desc = 0; desc < LTQ_DESC_NUM; desc++)
  			dev_kfree_skb_any(ch->skb[ch->dma.desc]);
-@@ -233,66 +310,135 @@ static void
+@@ -223,66 +300,135 @@ static void
  ltq_etop_hw_exit(struct net_device *dev)
  {
  	struct ltq_etop_priv *priv = netdev_priv(dev);
@@ -331,10 +331,11 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
  	struct ltq_etop_priv *priv = netdev_priv(dev);
 -	int i;
 +	int mii_mode = priv->mii_mode;
-+
-+	clk_enable(priv->clk_ppe);
  
 -	ltq_pmu_enable(PMU_PPE);
++	clk_enable(priv->clk_ppe);
+ 
+-	switch (priv->pldata->mii_mode) {
 +	if (of_machine_is_compatible("lantiq,ar9")) {
 +		ltq_etop_gbit_init(dev);
 +		/* force the etops link to the gbit to MII */
@@ -343,8 +344,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
 +	ltq_etop_w32_mask(MDIO_CFG_MASK, 0, LTQ_ETOP_MDIO_CFG);
 +	ltq_etop_w32_mask(MAC_CFG_MASK, MAC_CFG_CGEN | MAC_CFG_DUPLEX |
 +			MAC_CFG_SPEED | MAC_CFG_LINK, LTQ_ETOP_MAC_CFG);
- 
--	switch (priv->pldata->mii_mode) {
++
 +	switch (mii_mode) {
  	case PHY_INTERFACE_MODE_RMII:
 -		ltq_etop_w32_mask(ETOP_MII_MASK,
@@ -446,7 +446,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
  }
  
  static void
-@@ -311,6 +457,39 @@ static const struct ethtool_ops ltq_etop
+@@ -301,6 +447,39 @@ static const struct ethtool_ops ltq_etop
  };
  
  static int
@@ -486,7 +486,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
  ltq_etop_mdio_wr(struct mii_bus *bus, int phy_addr, int phy_reg, u16 phy_data)
  {
  	u32 val = MDIO_REQUEST |
-@@ -318,9 +497,9 @@ ltq_etop_mdio_wr(struct mii_bus *bus, in
+@@ -308,9 +487,9 @@ ltq_etop_mdio_wr(struct mii_bus *bus, in
  		((phy_reg & MDIO_REG_MASK) << MDIO_REG_OFFSET) |
  		phy_data;
  
@@ -498,7 +498,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
  	return 0;
  }
  
-@@ -331,12 +510,12 @@ ltq_etop_mdio_rd(struct mii_bus *bus, in
+@@ -321,12 +500,12 @@ ltq_etop_mdio_rd(struct mii_bus *bus, in
  		((phy_addr & MDIO_ADDR_MASK) << MDIO_ADDR_OFFSET) |
  		((phy_reg & MDIO_REG_MASK) << MDIO_REG_OFFSET);
  
@@ -515,17 +515,9 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
  	return val;
  }
  
-@@ -351,8 +530,18 @@ ltq_etop_mdio_probe(struct net_device *d
- {
+@@ -342,7 +521,10 @@ ltq_etop_mdio_probe(struct net_device *d
  	struct ltq_etop_priv *priv = netdev_priv(dev);
  	struct phy_device *phydev;
-+	u32 phy_supported =  (SUPPORTED_10baseT_Half
-+			| SUPPORTED_10baseT_Full
-+			| SUPPORTED_100baseT_Half
-+			| SUPPORTED_100baseT_Full
-+			| SUPPORTED_Autoneg
-+			| SUPPORTED_MII
-+			| SUPPORTED_TP);
  
 -	phydev = phy_find_first(priv->mii_bus);
 +	if (of_machine_is_compatible("lantiq,ase"))
@@ -535,7 +527,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
  
  	if (!phydev) {
  		netdev_err(dev, "no PHY found\n");
-@@ -360,21 +549,18 @@ ltq_etop_mdio_probe(struct net_device *d
+@@ -350,14 +532,17 @@ ltq_etop_mdio_probe(struct net_device *d
  	}
  
  	phydev = phy_connect(dev, phydev_name(phydev),
@@ -547,22 +539,15 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
  		return PTR_ERR(phydev);
  	}
  
--	phydev->supported &= (SUPPORTED_10baseT_Half
--			      | SUPPORTED_10baseT_Full
--			      | SUPPORTED_100baseT_Half
--			      | SUPPORTED_100baseT_Full
--			      | SUPPORTED_Autoneg
--			      | SUPPORTED_MII
--			      | SUPPORTED_TP);
+-	phy_set_max_speed(phydev, SPEED_100);
 +	if (of_machine_is_compatible("lantiq,ar9"))
-+		phy_supported |= SUPPORTED_1000baseT_Half
-+			| SUPPORTED_1000baseT_Full;
++		phy_set_max_speed(phydev, SPEED_1000);
++	else
++		phy_set_max_speed(phydev, SPEED_100);
  
-+	phydev->supported &= phy_supported;
- 	phydev->advertising = phydev->supported;
  	phy_attached_info(phydev);
  
-@@ -395,8 +581,13 @@ ltq_etop_mdio_init(struct net_device *de
+@@ -378,8 +563,13 @@ ltq_etop_mdio_init(struct net_device *de
  	}
  
  	priv->mii_bus->priv = dev;
@@ -578,7 +563,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
  	priv->mii_bus->name = "ltq_mii";
  	snprintf(priv->mii_bus->id, MII_BUS_ID_SIZE, "%s-%x",
  		priv->pdev->name, priv->pdev->id);
-@@ -433,17 +624,19 @@ static int
+@@ -416,18 +606,21 @@ static int
  ltq_etop_open(struct net_device *dev)
  {
  	struct ltq_etop_priv *priv = netdev_priv(dev);
@@ -592,7 +577,9 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
 +
 +	spin_lock_irqsave(&priv->lock, flags);
 +	ltq_dma_open(&priv->txch.dma);
++	ltq_dma_enable_irq(&priv->txch.dma);
 +	ltq_dma_open(&priv->rxch.dma);
++	ltq_dma_enable_irq(&priv->rxch.dma);
 +	spin_unlock_irqrestore(&priv->lock, flags);
 +
 +	if (dev->phydev)
@@ -601,13 +588,14 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
 -		if (!IS_TX(i) && (!IS_RX(i)))
 -			continue;
 -		ltq_dma_open(&ch->dma);
+-		ltq_dma_enable_irq(&ch->dma);
 -		napi_enable(&ch->napi);
 -	}
 -	phy_start(dev->phydev);
  	netif_tx_start_all_queues(dev);
  	return 0;
  }
-@@ -452,18 +645,19 @@ static int
+@@ -436,18 +629,19 @@ static int
  ltq_etop_stop(struct net_device *dev)
  {
  	struct ltq_etop_priv *priv = netdev_priv(dev);
@@ -637,7 +625,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
  	return 0;
  }
  
-@@ -473,16 +667,16 @@ ltq_etop_tx(struct sk_buff *skb, struct
+@@ -457,16 +651,16 @@ ltq_etop_tx(struct sk_buff *skb, struct
  	int queue = skb_get_queue_mapping(skb);
  	struct netdev_queue *txq = netdev_get_tx_queue(dev, queue);
  	struct ltq_etop_priv *priv = netdev_priv(dev);
@@ -659,7 +647,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
  		netdev_err(dev, "tx ring full\n");
  		netif_tx_stop_queue(txq);
  		return NETDEV_TX_BUSY;
-@@ -490,7 +684,7 @@ ltq_etop_tx(struct sk_buff *skb, struct
+@@ -474,7 +668,7 @@ ltq_etop_tx(struct sk_buff *skb, struct
  
  	/* dma needs to start on a 16 byte aligned address */
  	byte_offset = CPHYSADDR(skb->data) % 16;
@@ -668,7 +656,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
  
  	netif_trans_update(dev);
  
-@@ -500,11 +694,11 @@ ltq_etop_tx(struct sk_buff *skb, struct
+@@ -484,11 +678,11 @@ ltq_etop_tx(struct sk_buff *skb, struct
  	wmb();
  	desc->ctl = LTQ_DMA_OWN | LTQ_DMA_SOP | LTQ_DMA_EOP |
  		LTQ_DMA_TX_OFFSET(byte_offset) | (len & LTQ_DMA_SIZE_MASK);
@@ -683,7 +671,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
  		netif_tx_stop_queue(txq);
  
  	return NETDEV_TX_OK;
-@@ -515,11 +709,14 @@ ltq_etop_change_mtu(struct net_device *d
+@@ -499,11 +693,14 @@ ltq_etop_change_mtu(struct net_device *d
  {
  	struct ltq_etop_priv *priv = netdev_priv(dev);
  	unsigned long flags;
@@ -699,7 +687,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
  	spin_unlock_irqrestore(&priv->lock, flags);
  
  	return 0;
-@@ -579,6 +776,9 @@ ltq_etop_init(struct net_device *dev)
+@@ -563,6 +760,9 @@ ltq_etop_init(struct net_device *dev)
  	if (err)
  		goto err_hw;
  	ltq_etop_change_mtu(dev, 1500);
@@ -709,7 +697,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
  
  	memcpy(&mac, &priv->pldata->mac, sizeof(struct sockaddr));
  	if (!is_valid_ether_addr(mac.sa_data)) {
-@@ -596,9 +796,10 @@ ltq_etop_init(struct net_device *dev)
+@@ -580,9 +780,10 @@ ltq_etop_init(struct net_device *dev)
  		dev->addr_assign_type = NET_ADDR_RANDOM;
  
  	ltq_etop_set_multicast_list(dev);
@@ -723,7 +711,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
  	return 0;
  
  err_netdev:
-@@ -618,6 +819,9 @@ ltq_etop_tx_timeout(struct net_device *d
+@@ -602,6 +803,9 @@ ltq_etop_tx_timeout(struct net_device *d
  	err = ltq_etop_hw_init(dev);
  	if (err)
  		goto err_hw;
@@ -733,7 +721,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
  	netif_trans_update(dev);
  	netif_wake_queue(dev);
  	return;
-@@ -641,14 +845,19 @@ static const struct net_device_ops ltq_e
+@@ -625,14 +829,19 @@ static const struct net_device_ops ltq_e
  	.ndo_tx_timeout = ltq_etop_tx_timeout,
  };
  
@@ -757,7 +745,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
  
  	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
  	if (!res) {
-@@ -674,31 +883,62 @@ ltq_etop_probe(struct platform_device *p
+@@ -658,31 +867,62 @@ ltq_etop_probe(struct platform_device *p
  		goto err_out;
  	}
  
@@ -835,7 +823,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
  
  	err = register_netdev(dev);
  	if (err)
-@@ -727,31 +967,22 @@ ltq_etop_remove(struct platform_device *
+@@ -711,31 +951,22 @@ ltq_etop_remove(struct platform_device *
  	return 0;
  }