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, 140 insertions, 0 deletions

diff --git a/target/linux/layerscape/patches-5.4/821-vfio-0002-vfio-fsl-mc-Scan-DPRC-objects-on-vfio-fsl-mc-driver-.patch b/target/linux/layerscape/patches-5.4/821-vfio-0002-vfio-fsl-mc-Scan-DPRC-objects-on-vfio-fsl-mc-driver-.patch
new file mode 100644
index 0000000000..688747796f
--- /dev/null
+++ b/target/linux/layerscape/patches-5.4/821-vfio-0002-vfio-fsl-mc-Scan-DPRC-objects-on-vfio-fsl-mc-driver-.patch
@@ -0,0 +1,140 @@
+From a309870f6fa4a9f69ca7490b355d147b0caeffd0 Mon Sep 17 00:00:00 2001
+From: Diana Craciun <diana.craciun@nxp.com>
+Date: Fri, 13 Sep 2019 17:20:35 +0300
+Subject: [PATCH] vfio/fsl-mc: Scan DPRC objects on vfio-fsl-mc driver bind
+
+The DPRC(Data Path Resource Container) device is a bus device and has
+child devices attached to it. When the vfio-fsl-mc driver is probed
+the DPRC is scanned and the child devices discovered and initialized.
+
+Signed-off-by: Bharat Bhushan <Bharat.Bhushan@nxp.com>
+Signed-off-by: Diana Craciun <diana.craciun@nxp.com>
+---
+ drivers/vfio/fsl-mc/vfio_fsl_mc.c | 99 +++++++++++++++++++++++++++++++++++++++
+ 1 file changed, 99 insertions(+)
+
+--- a/drivers/vfio/fsl-mc/vfio_fsl_mc.c
++++ b/drivers/vfio/fsl-mc/vfio_fsl_mc.c
+@@ -74,7 +74,75 @@ static int vfio_fsl_mc_mmap(void *device
+ {
+ 	return -EINVAL;
+ }
++static int vfio_fsl_mc_init_device(struct vfio_fsl_mc_device *vdev)
++{
++	struct fsl_mc_device *mc_dev = vdev->mc_dev;
++	struct fsl_mc_bus *mc_bus;
++	size_t region_size;
++	int ret = 0;
++	unsigned int irq_count;
++
++	/* Non-dprc devices share mc_io from parent */
++	if (!is_fsl_mc_bus_dprc(mc_dev)) {
++		struct fsl_mc_device *mc_cont = to_fsl_mc_device(mc_dev->dev.parent);
++
++		mc_dev->mc_io = mc_cont->mc_io;
++		return 0;
++	}
++
++	/* Use dprc mc-portal for interaction with MC f/w. */
++	region_size = resource_size(mc_dev->regions);
++	ret = fsl_create_mc_io(&mc_dev->dev,
++			 mc_dev->regions[0].start,
++			 region_size,
++			 NULL,
++			 FSL_MC_IO_ATOMIC_CONTEXT_PORTAL,
++			 &mc_dev->mc_io);
++	if (ret < 0) {
++		dev_err(&mc_dev->dev, "failed to create mc-io (error = %d)\n", ret);
++		return ret;
++	}
++	ret = dprc_open(mc_dev->mc_io, 0, mc_dev->obj_desc.id,
++			  &mc_dev->mc_handle);
++	if (ret < 0) {
++		dev_err(&mc_dev->dev, "dprc_open() failed: %d\n", ret);
++		goto clean_mc_io;
++	}
+ 
++	mc_bus = to_fsl_mc_bus(mc_dev);
++	/* initialize resource pools */
++	fsl_mc_init_all_resource_pools(mc_dev);
++
++	mutex_init(&mc_bus->scan_mutex);
++
++	mutex_lock(&mc_bus->scan_mutex);
++	ret = dprc_scan_objects(mc_dev, mc_dev->driver_override, false,
++		&irq_count);
++	mutex_unlock(&mc_bus->scan_mutex);
++
++	if (ret < 0) {
++		dev_err(&mc_dev->dev, "dprc_scan_objects() failed: %d\n", ret);
++		goto clean_resource_pool;
++	}
++
++	if (irq_count > FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS) {
++		dev_warn(&mc_dev->dev,
++			 "IRQs needed (%u) exceed IRQs preallocated (%u)\n",
++			 irq_count, FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS);
++	}
++
++return 0;
++
++clean_resource_pool:
++	fsl_mc_cleanup_all_resource_pools(mc_dev);
++	dprc_close(mc_dev->mc_io, 0, mc_dev->mc_handle);
++
++clean_mc_io:
++	fsl_destroy_mc_io(mc_dev->mc_io);
++	mc_dev->mc_io = NULL;
++
++	return ret;
++}
+ static const struct vfio_device_ops vfio_fsl_mc_ops = {
+ 	.name		= "vfio-fsl-mc",
+ 	.open		= vfio_fsl_mc_open,
+@@ -113,8 +181,34 @@ static int vfio_fsl_mc_probe(struct fsl_
+ 		return ret;
+ 	}
+ 
++	ret = vfio_fsl_mc_init_device(vdev);
++	if (ret) {
++		vfio_iommu_group_put(group, dev);
++		return ret;
++	}
++
+ 	return ret;
+ }
++static int vfio_fsl_mc_device_remove(struct device *dev, void *data)
++{
++	struct fsl_mc_device *mc_dev;
++
++	WARN_ON(dev == NULL);
++	mc_dev = to_fsl_mc_device(dev);
++	if (WARN_ON(mc_dev == NULL))
++		return -ENODEV;
++	fsl_mc_device_remove(mc_dev);
++
++	return 0;
++}
++
++static void vfio_fsl_mc_cleanup_dprc(struct fsl_mc_device *mc_dev)
++{
++	device_for_each_child(&mc_dev->dev, NULL, vfio_fsl_mc_device_remove);
++	fsl_mc_cleanup_all_resource_pools(mc_dev);
++	dprc_close(mc_dev->mc_io, 0, mc_dev->mc_handle);
++	fsl_destroy_mc_io(mc_dev->mc_io);
++}
+ 
+ static int vfio_fsl_mc_remove(struct fsl_mc_device *mc_dev)
+ {
+@@ -125,6 +219,11 @@ static int vfio_fsl_mc_remove(struct fsl
+ 	if (!vdev)
+ 		return -EINVAL;
+ 
++	if (is_fsl_mc_bus_dprc(mc_dev))
++		vfio_fsl_mc_cleanup_dprc(vdev->mc_dev);
++
++	mc_dev->mc_io = NULL;
++
+ 	vfio_iommu_group_put(mc_dev->dev.iommu_group, dev);
+ 	devm_kfree(dev, vdev);
+