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, 385 insertions, 0 deletions

diff --git a/target/linux/layerscape/patches-5.4/701-net-0401-fsl_qbman-Framework-for-enabling-Link-status-notific.patch b/target/linux/layerscape/patches-5.4/701-net-0401-fsl_qbman-Framework-for-enabling-Link-status-notific.patch
new file mode 100644
index 0000000000..b4767511f4
--- /dev/null
+++ b/target/linux/layerscape/patches-5.4/701-net-0401-fsl_qbman-Framework-for-enabling-Link-status-notific.patch
@@ -0,0 +1,385 @@
+From 136d46d2fa27815cc4cc3a57d5e3d54523028768 Mon Sep 17 00:00:00 2001
+From: Sachin Saxena <sachin.saxena@nxp.com>
+Date: Thu, 19 Dec 2019 12:57:35 +0530
+Subject: [PATCH] fsl_qbman: Framework for enabling Link status notification
+
+ -  This will enable link update event notification for
+    user space USDPAA application.
+
+Signed-off-by: Sachin Saxena <sachin.saxena@nxp.com>
+DPDK-2128
+(cherry picked from commit fb53c813a779cc3fc28c8ed3fc8bc0dde24db0ea)
+---
+ drivers/staging/fsl_qbman/Makefile     |   4 +
+ drivers/staging/fsl_qbman/fsl_usdpaa.c | 278 ++++++++++++++++++++++++++++++++-
+ include/linux/fsl_usdpaa.h             |  32 ++++
+ 3 files changed, 313 insertions(+), 1 deletion(-)
+
+--- a/drivers/staging/fsl_qbman/Makefile
++++ b/drivers/staging/fsl_qbman/Makefile
+@@ -1,5 +1,9 @@
+ subdir-ccflags-y := -Werror
+ 
++# Include netcomm SW specific definitions
++include $(srctree)/drivers/net/ethernet/freescale/sdk_fman/ncsw_config.mk
++ccflags-y += -I$(NET_DPA)
++
+ # Common
+ obj-$(CONFIG_FSL_SDK_DPA)		+= dpa_alloc.o
+ obj-$(CONFIG_FSL_SDK_DPA)	+= qbman_driver.o
+--- a/drivers/staging/fsl_qbman/fsl_usdpaa.c
++++ b/drivers/staging/fsl_qbman/fsl_usdpaa.c
+@@ -18,6 +18,8 @@
+ #include <linux/slab.h>
+ #include <linux/mman.h>
+ #include <linux/of_reserved_mem.h>
++#include <linux/eventfd.h>
++#include <linux/fdtable.h>
+ 
+ #if !(defined(CONFIG_ARM) || defined(CONFIG_ARM64))
+ #include <mm/mmu_decl.h>
+@@ -27,6 +29,26 @@
+ #include <linux/fsl_usdpaa.h>
+ #include "bman_low.h"
+ #include "qman_low.h"
++/* Headers requires for
++ * Link status support
++ */
++#include <linux/device.h>
++#include <linux/of_mdio.h>
++#include "mac.h"
++#include "dpaa_eth_common.h"
++
++/* Private data for Proxy Interface */
++struct dpa_proxy_priv_s {
++	struct mac_device	*mac_dev;
++	struct eventfd_ctx	*efd_ctx;
++};
++/* Interface Helpers */
++static inline struct device *get_dev_ptr(char *if_name);
++static void phy_link_updates(struct net_device *net_dev);
++/* IOCTL handlers */
++static inline int ioctl_usdpaa_get_link_status(char *if_name);
++static int ioctl_en_if_link_status(struct usdpaa_ioctl_link_status *args);
++static int ioctl_disable_if_link_status(char *if_name);
+ 
+ /* Physical address range of the memory reservation, exported for mm/mem.c */
+ static u64 phys_start;
+@@ -556,7 +578,6 @@ static bool check_portal_channel(void *c
+ 
+ 
+ 
+-
+ static int usdpaa_release(struct inode *inode, struct file *filp)
+ {
+ 	int err = 0;
+@@ -1656,6 +1677,220 @@ found:
+ 	return 0;
+ }
+ 
++
++static inline struct device *get_dev_ptr(char *if_name)
++{
++	struct device *dev;
++	char node[NODE_NAME_LEN];
++
++	sprintf(node, "soc:fsl,dpaa:%s",if_name);
++	dev = bus_find_device_by_name(&platform_bus_type, NULL, node);
++	if (dev == NULL) {
++		pr_err(KBUILD_MODNAME "IF %s not found\n", if_name);
++		return NULL;
++	}
++	pr_debug("%s: found dev 0x%lX  for If %s ,dev->platform_data %p\n",
++			  __func__, (unsigned long)dev,
++			  if_name, dev->platform_data);
++
++	return dev;
++}
++
++/* This function will return Current link status of the device
++ * '1' if Link is UP, '0' otherwise.
++ *
++ * Input parameter:
++ * if_name: Interface node name
++ *
++ */
++static inline int ioctl_usdpaa_get_link_status(char *if_name)
++{
++	struct net_device *net_dev = NULL;
++	struct device *dev;
++
++	dev = get_dev_ptr(if_name);
++	if (dev == NULL)
++		return -ENODEV;
++	net_dev = dev->platform_data;
++	if (net_dev == NULL)
++		return -ENODEV;
++
++	if (test_bit(__LINK_STATE_NOCARRIER, &net_dev->state))
++		return 0; /* Link is DOWN */
++	else
++		return 1; /* Link is UP */
++}
++
++
++/* Link Status Callback Function
++ * This function will be resgitered to PHY framework to get
++ * Link update notifications and should be responsible for waking up
++ * user space task when there is a link update notification.
++ */
++static void phy_link_updates(struct net_device *net_dev)
++{
++	struct dpa_proxy_priv_s *priv = NULL;
++
++	pr_debug("%s: Link '%s': Speed '%d-Mbps': Autoneg '%d': Duplex '%d'\n",
++		net_dev->name,
++		ioctl_usdpaa_get_link_status(net_dev->name)?"UP":"DOWN",
++		net_dev->phydev->speed,
++		net_dev->phydev->autoneg,
++		net_dev->phydev->duplex);
++
++	/* Wake up the user space context to notify PHY update */
++	priv = netdev_priv(net_dev);
++	eventfd_signal(priv->efd_ctx, 1);
++}
++
++
++/* IOCTL handler for enabling Link status request for a given interface
++ * Input parameters:
++ * args->if_name:	This the network interface node name as defind in
++ *			device tree file. Currently, it has format of
++ *			"ethernet@x" type for each interface.
++ * args->efd:		The eventfd value which should be waked up when
++ *			there is any link update received.
++ */
++static int ioctl_en_if_link_status(struct usdpaa_ioctl_link_status *args)
++{
++	struct net_device *net_dev = NULL;
++	struct dpa_proxy_priv_s *priv = NULL;
++	struct device *dev;
++	struct mac_device *mac_dev;
++	struct proxy_device *proxy_dev;
++	struct task_struct *userspace_task = NULL;
++	struct file *efd_file = NULL;
++
++	dev = get_dev_ptr(args->if_name);
++	if (dev == NULL)
++		return -ENODEV;
++	/* Utilize dev->platform_data to save netdevice
++	   pointer as it will not be registered */
++	if (dev->platform_data) {
++		pr_debug("%s: IF %s already initialized\n",
++			__func__, args->if_name);
++		/* This will happen when application is not able to initiate
++		 * cleanup in last run. We still need to save the new
++		 * eventfd context.
++		 */
++		net_dev = dev->platform_data;
++		priv = netdev_priv(net_dev);
++
++		/* Get current task context from which IOCTL was called */
++		userspace_task = current;
++
++		rcu_read_lock();
++		efd_file = fcheck_files(userspace_task->files, args->efd);
++		rcu_read_unlock();
++
++		priv->efd_ctx = eventfd_ctx_fileget(efd_file);
++		if (!priv->efd_ctx) {
++			pr_err(KBUILD_MODNAME "get eventfd context failed\n");
++			/* Free the allocated memory for net device */
++			dev->platform_data = NULL;
++			free_netdev(net_dev);
++			return -EINVAL;
++		}
++		/* Since there will be NO PHY update as link is already setup,
++		 * wake user context once so that current PHY status can
++		 * be fetched.
++		 */
++		phy_link_updates(net_dev);
++		return 0;
++	}
++
++	proxy_dev = dev_get_drvdata(dev);
++	mac_dev =  proxy_dev->mac_dev;
++	/* Allocate an dummy net device for proxy interface */
++	net_dev = alloc_etherdev(sizeof(*priv));
++	if (!net_dev) {
++		pr_err(KBUILD_MODNAME "alloc_etherdev failed\n");
++		return -ENOMEM;
++	} else {
++		SET_NETDEV_DEV(net_dev, dev);
++		priv = netdev_priv(net_dev);
++		priv->mac_dev = mac_dev;
++		/* Get current task context from which IOCTL was called */
++		userspace_task = current;
++
++		rcu_read_lock();
++		efd_file = fcheck_files(userspace_task->files, args->efd);
++		rcu_read_unlock();
++
++		priv->efd_ctx = eventfd_ctx_fileget(efd_file);
++
++		if (!priv->efd_ctx) {
++			pr_err(KBUILD_MODNAME "get eventfd context failed\n");
++			/* Free the allocated memory for net device */
++			free_netdev(net_dev);
++			return -EINVAL;
++		}
++		strncpy(net_dev->name, args->if_name, IF_NAME_MAX_LEN);
++		dev->platform_data = net_dev;
++	}
++
++	pr_debug("%s: mac_dev %p cell_index %d\n",
++		__func__, mac_dev, mac_dev->cell_index);
++	mac_dev->phy_dev = of_phy_connect(net_dev, mac_dev->phy_node,
++	                         phy_link_updates, 0, mac_dev->phy_if);
++	if (unlikely(mac_dev->phy_dev == NULL) || IS_ERR(mac_dev->phy_dev)) {
++		pr_err("%s: --------Error in PHY Connect\n", __func__);
++		/* Free the allocated memory for net device */
++		free_netdev(net_dev);
++		return -ENODEV;
++	}
++	net_dev->phydev = mac_dev->phy_dev;
++	mac_dev->start(mac_dev);
++	pr_debug("%s: --- PHY connected for %s\n", __func__, args->if_name);
++
++	return 0;
++}
++
++/* IOCTL handler for disabling Link status for a given interface
++ * Input parameters:
++ * if_name:	This the network interface node name as defind in
++ *		device tree file. Currently, it has format of
++ *		"ethernet@x" type for each interface.
++ */
++static int ioctl_disable_if_link_status(char *if_name)
++{
++	struct net_device *net_dev = NULL;
++	struct device *dev;
++	struct mac_device *mac_dev;
++	struct proxy_device *proxy_dev;
++	struct dpa_proxy_priv_s *priv = NULL;
++
++	dev = get_dev_ptr(if_name);
++	if (dev == NULL)
++		return -ENODEV;
++	/* Utilize dev->platform_data to save netdevice
++	   pointer as it will not be registered */
++	if (!dev->platform_data) {
++		pr_debug("%s: IF %s already Disabled for Link status\n",
++			__func__, if_name);
++		return 0;
++	}
++
++	net_dev = dev->platform_data;
++	proxy_dev = dev_get_drvdata(dev);
++	mac_dev =  proxy_dev->mac_dev;
++	mac_dev->stop(mac_dev);
++
++	priv = netdev_priv(net_dev);
++	eventfd_ctx_put(priv->efd_ctx);
++
++	/* This will also deregister the call back */
++	phy_disconnect(mac_dev->phy_dev);
++	phy_resume(mac_dev->phy_dev);
++
++	free_netdev(net_dev);
++	dev->platform_data = NULL;
++
++	pr_debug("%s: Link status Disabled for %s\n", __func__, if_name);
++	return 0;
++}
++
+ static long usdpaa_ioctl(struct file *fp, unsigned int cmd, unsigned long arg)
+ {
+ 	struct ctx *ctx = fp->private_data;
+@@ -1722,6 +1957,47 @@ static long usdpaa_ioctl(struct file *fp
+ 			return -EFAULT;
+ 		return ioctl_free_raw_portal(fp, ctx, &input);
+ 	}
++	case USDPAA_IOCTL_ENABLE_LINK_STATUS_INTERRUPT:
++	{
++		struct usdpaa_ioctl_link_status input;
++		int ret;
++
++		if (copy_from_user(&input, a, sizeof(input)))
++			return -EFAULT;
++		ret = ioctl_en_if_link_status(&input);
++		if (ret)
++			pr_err("Error(%d) enable link interrupt:IF: %s\n",
++				ret, input.if_name);
++		return ret;
++	}
++	case USDPAA_IOCTL_DISABLE_LINK_STATUS_INTERRUPT:
++	{
++		char *input;
++		int ret;
++
++		if (copy_from_user(&input, a, sizeof(input)))
++			return -EFAULT;
++		ret = ioctl_disable_if_link_status(input);
++		if (ret)
++			pr_err("Error(%d) Disabling link interrupt:IF: %s\n",
++				ret, input);
++		return ret;
++	}
++	case USDPAA_IOCTL_GET_LINK_STATUS:
++	{
++		struct usdpaa_ioctl_link_status_args input;
++
++		if (copy_from_user(&input, a, sizeof(input)))
++			return -EFAULT;
++
++		input.link_status = ioctl_usdpaa_get_link_status(input.if_name);
++		if (input.link_status < 0)
++			return input.link_status;
++		if (copy_to_user(a, &input, sizeof(input)))
++			return -EFAULT;
++
++		return 0;
++	}
+ 	}
+ 	return -EINVAL;
+ }
+--- a/include/linux/fsl_usdpaa.h
++++ b/include/linux/fsl_usdpaa.h
+@@ -365,6 +365,38 @@ int dpa_alloc_pop(struct dpa_alloc *allo
+ int dpa_alloc_check(struct dpa_alloc *list, u32 id);
+ #endif /* __KERNEL__ */
+ 
++
++/************************************
++ * Link Status support for user space
++ * interface
++ ************************************/
++#define IF_NAME_MAX_LEN 16
++#define NODE_NAME_LEN	32
++
++struct usdpaa_ioctl_link_status {
++	/* network device node name */
++	char		if_name[IF_NAME_MAX_LEN];
++	/* Eventfd value */
++	uint32_t	efd;
++};
++
++#define USDPAA_IOCTL_ENABLE_LINK_STATUS_INTERRUPT \
++	_IOW(USDPAA_IOCTL_MAGIC, 0x0E, struct usdpaa_ioctl_link_status)
++
++#define USDPAA_IOCTL_DISABLE_LINK_STATUS_INTERRUPT \
++	_IOW(USDPAA_IOCTL_MAGIC, 0x0F, char *)
++
++struct usdpaa_ioctl_link_status_args {
++	/* network device node name */
++	char    if_name[IF_NAME_MAX_LEN];
++	/* link status(UP/DOWN) */
++	int     link_status;
++};
++
++#define USDPAA_IOCTL_GET_LINK_STATUS \
++	_IOWR(USDPAA_IOCTL_MAGIC, 0x10, struct usdpaa_ioctl_link_status_args)
++
++
+ #ifdef __cplusplus
+ }
+ #endif