armvirt: add 5.15 patches for NXP DPAA2 platform

This fixes an issue with NXP's DPAA2 platforms (LS1088/2088/LX2160)
* A deadlock issue when attempting to detach the SFP management from
  a PHY interface (e.g when trying to reboot). These issues were fixed
  in kernel 6.2[1], but it's version does not cleanly apply onto 5.15.

Signed-off-by: Mathew McBride <matt@traverse.com.au>

[1] - see patch series "Fix rtnl_mutex deadlock with DPAA2 and SFP modules",
https://patchwork.kernel.org/project/netdevbpf/cover/20221129141221.872653-1-vladimir.oltean@nxp.com/

2 files changed, 108 insertions, 0 deletions

diff --git a/target/linux/armvirt/patches-5.15/701-dpaa2-eth-do-not-hold-rtnl_lock.patch b/target/linux/armvirt/patches-5.15/701-dpaa2-eth-do-not-hold-rtnl_lock.patch
new file mode 100644
index 0000000000..447266fa14
--- /dev/null
+++ b/target/linux/armvirt/patches-5.15/701-dpaa2-eth-do-not-hold-rtnl_lock.patch
@@ -0,0 +1,74 @@
+From d5af37ae22f0364be9ded773d737dd6e5b207b10 Mon Sep 17 00:00:00 2001
+From: Ioana Ciornei <ioana.ciornei@nxp.com>
+Date: Thu, 21 Nov 2019 21:15:25 +0200
+Subject: [PATCH 3/4] dpaa2-eth: do not hold rtnl_lock on phylink_create() or
+ _destroy()
+
+The rtnl_lock should not be held when calling phylink_create() or
+phylink_destroy() since it leads to the deadlock listed below:
+
+[   18.656576]  rtnl_lock+0x18/0x20
+[   18.659798]  sfp_bus_add_upstream+0x28/0x90
+[   18.663974]  phylink_create+0x2cc/0x828
+[   18.667803]  dpaa2_mac_connect+0x14c/0x2a8
+[   18.671890]  dpaa2_eth_connect_mac+0x94/0xd8
+
+Fix this by moving the _lock() and _unlock() calls just outside of
+phylink_of_phy_connect() and phylink_disconnect_phy().
+
+Fixes: 719479230893 ("dpaa2-eth: add MAC/PHY support through phylink")
+Reported-by: Russell King <linux@armlinux.org.uk>
+Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
+Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
+---
+ drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c | 4 ----
+ drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c | 4 ++++
+ 2 files changed, 4 insertions(+), 4 deletions(-)
+
+--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
++++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
+@@ -4217,12 +4217,10 @@ static irqreturn_t dpni_irq0_handler_thr
+ 		dpaa2_eth_set_mac_addr(netdev_priv(net_dev));
+ 		dpaa2_eth_update_tx_fqids(priv);
+ 
+-		rtnl_lock();
+ 		if (dpaa2_eth_has_mac(priv))
+ 			dpaa2_eth_disconnect_mac(priv);
+ 		else
+ 			dpaa2_eth_connect_mac(priv);
+-		rtnl_unlock();
+ 	}
+ 
+ 	return IRQ_HANDLED;
+@@ -4516,9 +4514,7 @@ static int dpaa2_eth_remove(struct fsl_m
+ #endif
+ 
+ 	unregister_netdev(net_dev);
+-	rtnl_lock();
+ 	dpaa2_eth_disconnect_mac(priv);
+-	rtnl_unlock();
+ 
+ 	dpaa2_eth_dl_port_del(priv);
+ 	dpaa2_eth_dl_traps_unregister(priv);
+--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c
++++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c
+@@ -351,7 +351,9 @@ int dpaa2_mac_connect(struct dpaa2_mac *
+ 	if (mac->pcs)
+ 		phylink_set_pcs(mac->phylink, &mac->pcs->pcs);
+ 
++	rtnl_lock();
+ 	err = phylink_fwnode_phy_connect(mac->phylink, dpmac_node, 0);
++	rtnl_unlock();
+ 	if (err) {
+ 		netdev_err(net_dev, "phylink_fwnode_phy_connect() = %d\n", err);
+ 		goto err_phylink_destroy;
+@@ -372,7 +374,9 @@ void dpaa2_mac_disconnect(struct dpaa2_m
+ 	if (!mac->phylink)
+ 		return;
+ 
++	rtnl_lock();
+ 	phylink_disconnect_phy(mac->phylink);
++	rtnl_unlock();
+ 	phylink_destroy(mac->phylink);
+ 	dpaa2_pcs_destroy(mac);
+ }
diff --git a/target/linux/armvirt/patches-5.15/702-net-dpaa2-mac-add-support-for-more-10G-modes.patch b/target/linux/armvirt/patches-5.15/702-net-dpaa2-mac-add-support-for-more-10G-modes.patch
new file mode 100644
index 0000000000..0bd96f1f4f
--- /dev/null
+++ b/target/linux/armvirt/patches-5.15/702-net-dpaa2-mac-add-support-for-more-10G-modes.patch
@@ -0,0 +1,34 @@
+From c314138bd045e050432158ab021160de3ba51c5e Mon Sep 17 00:00:00 2001
+From: Russell King <rmk+kernel@armlinux.org.uk>
+Date: Thu, 30 Jan 2020 22:42:38 +0000
+Subject: [PATCH 2/4] net: dpaa2-mac: add support for more 10G modes
+
+Phylink documentation says:
+ * Note that the PHY may be able to transform from one connection
+ * technology to another, so, eg, don't clear 1000BaseX just
+ * because the MAC is unable to BaseX mode. This is more about
+ * clearing unsupported speeds and duplex settings. The port modes
+ * should not be cleared; phylink_set_port_modes() will help with this.
+
+So add the missing 10G modes.
+
+Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
+---
+ drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c
++++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c
+@@ -140,6 +140,12 @@ static void dpaa2_mac_validate(struct ph
+ 	case PHY_INTERFACE_MODE_10GBASER:
+ 	case PHY_INTERFACE_MODE_USXGMII:
+ 		phylink_set(mask, 10000baseT_Full);
++		phylink_set(mask, 10000baseKR_Full);
++		phylink_set(mask, 10000baseCR_Full);
++		phylink_set(mask, 10000baseSR_Full);
++		phylink_set(mask, 10000baseLR_Full);
++		phylink_set(mask, 10000baseLRM_Full);
++		phylink_set(mask, 10000baseER_Full);
+ 		if (state->interface == PHY_INTERFACE_MODE_10GBASER)
+ 			break;
+ 		phylink_set(mask, 5000baseT_Full);