layerscape: add patches-5.4

Add patches for linux-5.4. The patches are from NXP LSDK-20.04 release
which was tagged LSDK-20.04-V5.4.
https://source.codeaurora.org/external/qoriq/qoriq-components/linux/

For boards LS1021A-IOT, and Traverse-LS1043 which are not involved in
LSDK, port the dts patches from 4.14.

The patches are sorted into the following categories:
  301-arch-xxxx
  302-dts-xxxx
  303-core-xxxx
  701-net-xxxx
  801-audio-xxxx
  802-can-xxxx
  803-clock-xxxx
  804-crypto-xxxx
  805-display-xxxx
  806-dma-xxxx
  807-gpio-xxxx
  808-i2c-xxxx
  809-jailhouse-xxxx
  810-keys-xxxx
  811-kvm-xxxx
  812-pcie-xxxx
  813-pm-xxxx
  814-qe-xxxx
  815-sata-xxxx
  816-sdhc-xxxx
  817-spi-xxxx
  818-thermal-xxxx
  819-uart-xxxx
  820-usb-xxxx
  821-vfio-xxxx

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>

1 files changed, 125 insertions, 0 deletions

diff --git a/target/linux/layerscape/patches-5.4/701-net-0217-dpaa2-eth-Don-t-use-netif_receive_skb_list-for-TCP-f.patch b/target/linux/layerscape/patches-5.4/701-net-0217-dpaa2-eth-Don-t-use-netif_receive_skb_list-for-TCP-f.patch
new file mode 100644
index 0000000000..74b4b6d3c0
--- /dev/null
+++ b/target/linux/layerscape/patches-5.4/701-net-0217-dpaa2-eth-Don-t-use-netif_receive_skb_list-for-TCP-f.patch
@@ -0,0 +1,125 @@
+From 01e74b70dd8183aa191cd594ec9fa2879357811f Mon Sep 17 00:00:00 2001
+From: Ioana Radulescu <ruxandra.radulescu@nxp.com>
+Date: Mon, 22 Jul 2019 18:52:39 +0300
+Subject: [PATCH] dpaa2-eth: Don't use netif_receive_skb_list for TCP frames
+
+Using Rx skb bulking for all frames may negatively impact the
+performance in some TCP termination scenarios, as it effectively
+bypasses GRO.
+
+Look at the hardware parse results of each ingress frame to see
+if a TCP header is present or not; for TCP frames fall back to
+the old implementation.
+
+Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
+Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
+---
+ drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c | 15 ++++++-
+ drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h | 51 ++++++++++++++++++++++++
+ 2 files changed, 65 insertions(+), 1 deletion(-)
+
+--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
++++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
+@@ -353,6 +353,16 @@ out:
+ 	return xdp_act;
+ }
+ 
++static bool frame_is_tcp(const struct dpaa2_fd *fd, struct dpaa2_fas *fas)
++{
++	struct dpaa2_fapr *fapr = dpaa2_get_fapr(fas, false);
++
++	if (!(dpaa2_fd_get_frc(fd) & DPAA2_FD_FRC_FAPRV))
++		return false;
++
++	return !!(fapr->faf_hi & DPAA2_FAF_HI_TCP_PRESENT);
++}
++
+ /* Main Rx frame processing routine */
+ static void dpaa2_eth_rx(struct dpaa2_eth_priv *priv,
+ 			 struct dpaa2_eth_channel *ch,
+@@ -440,7 +450,10 @@ static void dpaa2_eth_rx(struct dpaa2_et
+ 	percpu_stats->rx_packets++;
+ 	percpu_stats->rx_bytes += dpaa2_fd_get_len(fd);
+ 
+-	list_add_tail(&skb->list, ch->rx_list);
++	if (frame_is_tcp(fd, fas))
++		napi_gro_receive(&ch->napi, skb);
++	else
++		list_add_tail(&skb->list, ch->rx_list);
+ 
+ 	return;
+ 
+--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h
++++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h
+@@ -178,6 +178,49 @@ struct dpaa2_fas {
+  */
+ #define DPAA2_TS_OFFSET			0x8
+ 
++/* Frame annotation parse results */
++struct dpaa2_fapr {
++	/* 64-bit word 1 */
++	__le32 faf_lo;
++	__le16 faf_ext;
++	__le16 nxt_hdr;
++	/* 64-bit word 2 */
++	__le64 faf_hi;
++	/* 64-bit word 3 */
++	u8 last_ethertype_offset;
++	u8 vlan_tci_offset_n;
++	u8 vlan_tci_offset_1;
++	u8 llc_snap_offset;
++	u8 eth_offset;
++	u8 ip1_pid_offset;
++	u8 shim_offset_2;
++	u8 shim_offset_1;
++	/* 64-bit word 4 */
++	u8 l5_offset;
++	u8 l4_offset;
++	u8 gre_offset;
++	u8 l3_offset_n;
++	u8 l3_offset_1;
++	u8 mpls_offset_n;
++	u8 mpls_offset_1;
++	u8 pppoe_offset;
++	/* 64-bit word 5 */
++	__le16 running_sum;
++	__le16 gross_running_sum;
++	u8 ipv6_frag_offset;
++	u8 nxt_hdr_offset;
++	u8 routing_hdr_offset_2;
++	u8 routing_hdr_offset_1;
++	/* 64-bit word 6 */
++	u8 reserved[5]; /* Soft-parsing context */
++	u8 ip_proto_offset_n;
++	u8 nxt_hdr_frag_offset;
++	u8 parse_error_code;
++};
++
++#define DPAA2_FAPR_OFFSET		0x10
++#define DPAA2_FAPR_SIZE			sizeof((struct dpaa2_fapr))
++
+ /* Frame annotation egress action descriptor */
+ #define DPAA2_FAEAD_OFFSET		0x58
+ 
+@@ -208,6 +251,11 @@ static inline __le64 *dpaa2_get_ts(void
+ 	return dpaa2_get_hwa(buf_addr, swa) + DPAA2_TS_OFFSET;
+ }
+ 
++static inline struct dpaa2_fapr *dpaa2_get_fapr(void *buf_addr, bool swa)
++{
++	return dpaa2_get_hwa(buf_addr, swa) + DPAA2_FAPR_OFFSET;
++}
++
+ static inline struct dpaa2_faead *dpaa2_get_faead(void *buf_addr, bool swa)
+ {
+ 	return dpaa2_get_hwa(buf_addr, swa) + DPAA2_FAEAD_OFFSET;
+@@ -259,6 +307,9 @@ static inline struct dpaa2_faead *dpaa2_
+ 					 DPAA2_FAS_L3CE		| \
+ 					 DPAA2_FAS_L4CE)
+ 
++/* TCP indication in Frame Annotation Parse Results */
++#define DPAA2_FAF_HI_TCP_PRESENT	BIT(23)
++
+ /* Time in milliseconds between link state updates */
+ #define DPAA2_ETH_LINK_STATE_REFRESH	1000
+