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, 126 insertions, 0 deletions

diff --git a/target/linux/layerscape/patches-5.4/701-net-0094-dpaa_eth-fix-iova-handling-for-sg-frames.patch b/target/linux/layerscape/patches-5.4/701-net-0094-dpaa_eth-fix-iova-handling-for-sg-frames.patch
new file mode 100644
index 0000000000..273d7e5ea8
--- /dev/null
+++ b/target/linux/layerscape/patches-5.4/701-net-0094-dpaa_eth-fix-iova-handling-for-sg-frames.patch
@@ -0,0 +1,126 @@
+From 73cc32aace5fe123182337c3abd769a1d6edd9fe Mon Sep 17 00:00:00 2001
+From: Laurentiu Tudor <laurentiu.tudor@nxp.com>
+Date: Wed, 4 Apr 2018 15:12:28 +0300
+Subject: [PATCH] dpaa_eth: fix iova handling for sg frames
+
+The driver relies on the no longer valid assumption that dma addresses
+(iovas) are identical to physical addressees and uses phys_to_virt() to
+make iova -> vaddr conversions. Fix this also for scatter-gather frames
+using the iova -> phys conversion function added in the previous patch.
+While at it, clean-up a redundant dpaa_bpid2pool() and pass the bp
+as parameter.
+
+Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
+Acked-by: Madalin Bucur <madalin.bucur@nxp.com>
+[rebase]
+Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
+---
+ drivers/net/ethernet/freescale/dpaa/dpaa_eth.c | 41 +++++++++++++++-----------
+ 1 file changed, 24 insertions(+), 17 deletions(-)
+
+--- a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
++++ b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
+@@ -1656,14 +1656,17 @@ static struct sk_buff *dpaa_cleanup_tx_f
+ 
+ 	if (unlikely(qm_fd_get_format(fd) == qm_fd_sg)) {
+ 		nr_frags = skb_shinfo(skb)->nr_frags;
+-		dma_unmap_single(dev, addr,
+-				 qm_fd_get_offset(fd) + DPAA_SGT_SIZE,
+-				 dma_dir);
+ 
+ 		/* The sgt buffer has been allocated with netdev_alloc_frag(),
+ 		 * it's from lowmem.
+ 		 */
+-		sgt = phys_to_virt(addr + qm_fd_get_offset(fd));
++		sgt = phys_to_virt(dpaa_iova_to_phys(dev,
++						     addr +
++						     qm_fd_get_offset(fd)));
++
++		dma_unmap_single(dev, addr,
++				 qm_fd_get_offset(fd) + DPAA_SGT_SIZE,
++				 dma_dir);
+ 
+ 		/* sgt[0] is from lowmem, was dma_map_single()-ed */
+ 		dma_unmap_single(dev, qm_sg_addr(&sgt[0]),
+@@ -1702,7 +1705,7 @@ static struct sk_buff *dpaa_cleanup_tx_f
+ 		else
+ #endif
+ 			/* Free the page frag that we allocated on Tx */
+-			skb_free_frag(phys_to_virt(addr));
++			skb_free_frag(phys_to_virt(skbh));
+ 	}
+ 
+ 	return skb;
+@@ -1760,14 +1763,14 @@ static struct sk_buff *contig_fd_to_skb(
+  * The page fragment holding the S/G Table is recycled here.
+  */
+ static struct sk_buff *sg_fd_to_skb(const struct dpaa_priv *priv,
+-				    const struct qm_fd *fd)
++				    const struct qm_fd *fd,
++				    struct dpaa_bp *dpaa_bp,
++				    void *vaddr)
+ {
+ 	ssize_t fd_off = qm_fd_get_offset(fd);
+-	dma_addr_t addr = qm_fd_addr(fd);
+ 	const struct qm_sg_entry *sgt;
+ 	struct page *page, *head_page;
+-	struct dpaa_bp *dpaa_bp;
+-	void *vaddr, *sg_vaddr;
++	void *sg_vaddr;
+ 	int frag_off, frag_len;
+ 	struct sk_buff *skb;
+ 	dma_addr_t sg_addr;
+@@ -1776,7 +1779,6 @@ static struct sk_buff *sg_fd_to_skb(cons
+ 	int *count_ptr;
+ 	int i;
+ 
+-	vaddr = phys_to_virt(addr);
+ 	WARN_ON(!IS_ALIGNED((unsigned long)vaddr, SMP_CACHE_BYTES));
+ 
+ 	/* Iterate through the SGT entries and add data buffers to the skb */
+@@ -1787,14 +1789,18 @@ static struct sk_buff *sg_fd_to_skb(cons
+ 		WARN_ON(qm_sg_entry_is_ext(&sgt[i]));
+ 
+ 		sg_addr = qm_sg_addr(&sgt[i]);
+-		sg_vaddr = phys_to_virt(sg_addr);
+-		WARN_ON(!IS_ALIGNED((unsigned long)sg_vaddr,
+-				    SMP_CACHE_BYTES));
+ 
+ 		/* We may use multiple Rx pools */
+ 		dpaa_bp = dpaa_bpid2pool(sgt[i].bpid);
+-		if (!dpaa_bp)
++		if (!dpaa_bp) {
++			pr_info("%s: fail to get dpaa_bp for sg bpid %d\n",
++				__func__, sgt[i].bpid);
+ 			goto free_buffers;
++		}
++		sg_vaddr = phys_to_virt(dpaa_iova_to_phys(dpaa_bp->dev,
++							  sg_addr));
++		WARN_ON(!IS_ALIGNED((unsigned long)sg_vaddr,
++				    SMP_CACHE_BYTES));
+ 
+ 		count_ptr = this_cpu_ptr(dpaa_bp->percpu_count);
+ 		dma_unmap_single(dpaa_bp->dev, sg_addr, dpaa_bp->size,
+@@ -1866,10 +1872,11 @@ free_buffers:
+ 	/* free all the SG entries */
+ 	for (i = 0; i < DPAA_SGT_MAX_ENTRIES ; i++) {
+ 		sg_addr = qm_sg_addr(&sgt[i]);
+-		sg_vaddr = phys_to_virt(sg_addr);
+-		skb_free_frag(sg_vaddr);
+ 		dpaa_bp = dpaa_bpid2pool(sgt[i].bpid);
+ 		if (dpaa_bp) {
++			sg_addr = dpaa_iova_to_phys(dpaa_bp->dev, sg_addr);
++			sg_vaddr = phys_to_virt(sg_addr);
++			skb_free_frag(sg_vaddr);
+ 			count_ptr = this_cpu_ptr(dpaa_bp->percpu_count);
+ 			(*count_ptr)--;
+ 		}
+@@ -2498,7 +2505,7 @@ static enum qman_cb_dqrr_result rx_defau
+ 	if (likely(fd_format == qm_fd_contig))
+ 		skb = contig_fd_to_skb(priv, fd, dpaa_bp, vaddr);
+ 	else
+-		skb = sg_fd_to_skb(priv, fd);
++		skb = sg_fd_to_skb(priv, fd, dpaa_bp, vaddr);
+ 	if (!skb)
+ 		return qman_cb_dqrr_consume;
+