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, 116 insertions, 0 deletions

diff --git a/target/linux/layerscape/patches-5.4/701-net-0071-sdk_dpaa-ceetm-drain-the-ceetm-CQs-on-destroy.patch b/target/linux/layerscape/patches-5.4/701-net-0071-sdk_dpaa-ceetm-drain-the-ceetm-CQs-on-destroy.patch
new file mode 100644
index 0000000000..bdca2361a0
--- /dev/null
+++ b/target/linux/layerscape/patches-5.4/701-net-0071-sdk_dpaa-ceetm-drain-the-ceetm-CQs-on-destroy.patch
@@ -0,0 +1,116 @@
+From fe7ed61721646077de5eb06a105e60634374a00c Mon Sep 17 00:00:00 2001
+From: Camelia Groza <camelia.groza@nxp.com>
+Date: Thu, 31 May 2018 10:45:50 +0300
+Subject: [PATCH] sdk_dpaa: ceetm: drain the ceetm CQs on destroy
+
+The CEETM CQs must be empty when configured. To guarantee this, stop all
+transmissions and wait for them to drain before releasing them. On the
+next configuration, we are certain they will be empty.
+
+Signed-off-by: Camelia Groza <camelia.groza@nxp.com>
+---
+ .../ethernet/freescale/sdk_dpaa/dpaa_eth_ceetm.c   | 62 ++++++++++++++++++++++
+ 1 file changed, 62 insertions(+)
+
+--- a/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_ceetm.c
++++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_ceetm.c
+@@ -90,6 +90,51 @@ static void dpaa_drain_fqs(struct net_de
+ 	}
+ }
+ 
++/* Wait for the DPAA CEETM TX CQs to empty */
++static void ceetm_drain_class(struct ceetm_class *cl)
++{
++	struct qm_mcr_ceetm_cq_query cq_query;
++	struct qm_ceetm_cq *cq;
++	unsigned int idx;
++	int ret;
++
++	if (!cl)
++		return;
++
++	switch (cl->type) {
++	case CEETM_ROOT:
++		/* The ROOT classes aren't directly linked to CEETM CQs */
++		return;
++	case CEETM_PRIO:
++		cq = (struct qm_ceetm_cq*)cl->prio.cq;
++		break;
++	case CEETM_WBFS:
++		cq = (struct qm_ceetm_cq*)cl->wbfs.cq;
++		break;
++	}
++
++	if (!cq || !cl->ch)
++		return;
++
++	/* Build the query CQID by merging the channel and the CQ IDs */
++	idx = (cq->parent->idx << 4) | cq->idx;
++
++	while (true) {
++		ret = qman_ceetm_query_cq(idx,
++					  cl->ch->dcp_idx,
++					  &cq_query);
++		if (unlikely(ret)) {
++			pr_err(KBUILD_BASENAME
++			       " : %s : unable to query CQ %x: %d\n",
++			       __func__, idx, ret);
++			break;
++		}
++
++		if (cq_query.frm_cnt == 0)
++			break;
++	}
++}
++
+ /* Enqueue Rejection Notification callback */
+ static void ceetm_ern(struct qman_portal *portal, struct qman_fq *fq,
+ 		      const struct qm_mr_entry *msg)
+@@ -376,6 +421,8 @@ static void ceetm_link_class(struct Qdis
+ /* Destroy a ceetm class */
+ static void ceetm_cls_destroy(struct Qdisc *sch, struct ceetm_class *cl)
+ {
++	struct net_device *dev = qdisc_dev(sch);
++
+ 	if (!cl)
+ 		return;
+ 
+@@ -402,6 +449,12 @@ static void ceetm_cls_destroy(struct Qdi
+ 			cl->prio.child = NULL;
+ 		}
+ 
++		/* We must make sure the CQ is empty before releasing it.
++		 * Pause all transmissions while we wait for it to drain.
++		 */
++		netif_tx_stop_all_queues(dev);
++		ceetm_drain_class(cl);
++
+ 		if (cl->prio.lfq && qman_ceetm_lfq_release(cl->prio.lfq))
+ 			pr_err(KBUILD_BASENAME
+ 			       " : %s : error releasing the LFQ %d\n",
+@@ -422,9 +475,16 @@ static void ceetm_cls_destroy(struct Qdi
+ 		if (cl->prio.cstats)
+ 			free_percpu(cl->prio.cstats);
+ 
++		netif_tx_wake_all_queues(dev);
+ 		break;
+ 
+ 	case CEETM_WBFS:
++		/* We must make sure the CQ is empty before releasing it.
++		 * Pause all transmissions while we wait for it to drain.
++		 */
++		netif_tx_stop_all_queues(dev);
++		ceetm_drain_class(cl);
++
+ 		if (cl->wbfs.lfq && qman_ceetm_lfq_release(cl->wbfs.lfq))
+ 			pr_err(KBUILD_BASENAME
+ 			       " : %s : error releasing the LFQ %d\n",
+@@ -444,6 +504,8 @@ static void ceetm_cls_destroy(struct Qdi
+ 
+ 		if (cl->wbfs.cstats)
+ 			free_percpu(cl->wbfs.cstats);
++
++		netif_tx_wake_all_queues(dev);
+ 	}
+ 
+ 	tcf_block_put(cl->block);