1 files changed, 0 insertions, 385 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
deleted file mode 100644
index b4767511f4..0000000000
--- a/target/linux/layerscape/patches-5.4/701-net-0401-fsl_qbman-Framework-for-enabling-Link-status-notific.patch
+++ /dev/null
@@ -1,385 +0,0 @@
-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