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, 99 insertions, 0 deletions

diff --git a/target/linux/layerscape/patches-5.4/821-vfio-0005-vfio-fsl-mc-Allow-userspace-to-MMAP-fsl-mc-device-MM.patch b/target/linux/layerscape/patches-5.4/821-vfio-0005-vfio-fsl-mc-Allow-userspace-to-MMAP-fsl-mc-device-MM.patch
new file mode 100644
index 0000000000..67bdd20800
--- /dev/null
+++ b/target/linux/layerscape/patches-5.4/821-vfio-0005-vfio-fsl-mc-Allow-userspace-to-MMAP-fsl-mc-device-MM.patch
@@ -0,0 +1,99 @@
+From 3b81ac2bdcff0f611cad468329cc726600bb23ba Mon Sep 17 00:00:00 2001
+From: Diana Craciun <diana.craciun@nxp.com>
+Date: Fri, 27 Sep 2019 16:40:34 +0300
+Subject: [PATCH] vfio/fsl-mc: Allow userspace to MMAP fsl-mc device MMIO
+ regions
+
+Allow userspace to mmap device regions for direct access of
+fsl-mc devices.
+
+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 | 65 +++++++++++++++++++++++++++++++++++++--
+ 1 file changed, 63 insertions(+), 2 deletions(-)
+
+--- a/drivers/vfio/fsl-mc/vfio_fsl_mc.c
++++ b/drivers/vfio/fsl-mc/vfio_fsl_mc.c
+@@ -32,7 +32,10 @@ static int vfio_fsl_mc_regions_init(stru
+ 
+ 		vdev->regions[i].addr = res->start;
+ 		vdev->regions[i].size = PAGE_ALIGN((resource_size(res)));
+-		vdev->regions[i].flags = 0;
++		vdev->regions[i].flags = VFIO_REGION_INFO_FLAG_MMAP;
++		vdev->regions[i].flags |= VFIO_REGION_INFO_FLAG_READ;
++		if (!(mc_dev->regions[i].flags & IORESOURCE_READONLY))
++			vdev->regions[i].flags |= VFIO_REGION_INFO_FLAG_WRITE;
+ 	}
+ 
+ 	vdev->num_regions = mc_dev->obj_desc.region_count;
+@@ -163,10 +166,68 @@ static ssize_t vfio_fsl_mc_write(void *d
+ 	return -EINVAL;
+ }
+ 
++static int vfio_fsl_mc_mmap_mmio(struct vfio_fsl_mc_region region,
++				 struct vm_area_struct *vma)
++{
++	u64 size = vma->vm_end - vma->vm_start;
++	u64 pgoff, base;
++
++	pgoff = vma->vm_pgoff &
++		((1U << (VFIO_FSL_MC_OFFSET_SHIFT - PAGE_SHIFT)) - 1);
++	base = pgoff << PAGE_SHIFT;
++
++	if (region.size < PAGE_SIZE || base + size > region.size)
++		return -EINVAL;
++
++	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
++
++	vma->vm_pgoff = (region.addr >> PAGE_SHIFT) + pgoff;
++
++	return remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
++			       size, vma->vm_page_prot);
++}
++
+ static int vfio_fsl_mc_mmap(void *device_data, struct vm_area_struct *vma)
+ {
+-	return -EINVAL;
++	struct vfio_fsl_mc_device *vdev = device_data;
++	struct fsl_mc_device *mc_dev = vdev->mc_dev;
++	unsigned long size, addr;
++	int index;
++
++	index = vma->vm_pgoff >> (VFIO_FSL_MC_OFFSET_SHIFT - PAGE_SHIFT);
++
++	if (vma->vm_end < vma->vm_start)
++		return -EINVAL;
++	if (vma->vm_start & ~PAGE_MASK)
++		return -EINVAL;
++	if (vma->vm_end & ~PAGE_MASK)
++		return -EINVAL;
++	if (!(vma->vm_flags & VM_SHARED))
++		return -EINVAL;
++	if (index >= vdev->num_regions)
++		return -EINVAL;
++
++	if (!(vdev->regions[index].flags & VFIO_REGION_INFO_FLAG_MMAP))
++		return -EINVAL;
++
++	if (!(vdev->regions[index].flags & VFIO_REGION_INFO_FLAG_READ)
++			&& (vma->vm_flags & VM_READ))
++		return -EINVAL;
++
++	if (!(vdev->regions[index].flags & VFIO_REGION_INFO_FLAG_WRITE)
++			&& (vma->vm_flags & VM_WRITE))
++		return -EINVAL;
++
++	addr = vdev->regions[index].addr;
++	size = vdev->regions[index].size;
++
++	vma->vm_private_data = mc_dev;
++
++	return vfio_fsl_mc_mmap_mmio(vdev->regions[index], vma);
++
++	return -EFAULT;
+ }
++
+ static int vfio_fsl_mc_init_device(struct vfio_fsl_mc_device *vdev)
+ {
+ 	struct fsl_mc_device *mc_dev = vdev->mc_dev;