Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

Pull networking updates from Jakub Kicinski:
 "Core:

   - Add dedicated kmem_cache for typical/small skb->head, avoid having
     to access struct page at kfree time, and improve memory use.

   - Introduce sysctl to set default RPS configuration for new netdevs.

   - Define Netlink protocol specification format which can be used to
     describe messages used by each family and auto-generate parsers.
     Add tools for generating kernel data structures and uAPI headers.

   - Expose all net/core sysctls inside netns.

   - Remove 4s sleep in netpoll if carrier is instantly detected on
     boot.

   - Add configurable limit of MDB entries per port, and port-vlan.

   - Continue populating drop reasons throughout the stack.

   - Retire a handful of legacy Qdiscs and classifiers.

  Protocols:

   - Support IPv4 big TCP (TSO frames larger than 64kB).

   - Add IP_LOCAL_PORT_RANGE socket option, to control local port range
     on socket by socket basis.

   - Track and report in procfs number of MPTCP sockets used.

   - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path
     manager.

   - IPv6: don't check net.ipv6.route.max_size and rely on garbage
     collection to free memory (similarly to IPv4).

   - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986).

   - ICMP: add per-rate limit counters.

   - Add support for user scanning requests in ieee802154.

   - Remove static WEP support.

   - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate
     reporting.

   - WiFi 7 EHT channel puncturing support (client & AP).

  BPF:

   - Add a rbtree data structure following the "next-gen data structure"
     precedent set by recently added linked list, that is, by using
     kfunc + kptr instead of adding a new BPF map type.

   - Expose XDP hints via kfuncs with initial support for RX hash and
     timestamp metadata.

   - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to
     better support decap on GRE tunnel devices not operating in collect
     metadata.

   - Improve x86 JIT's codegen for PROBE_MEM runtime error checks.

   - Remove the need for trace_printk_lock for bpf_trace_printk and
     bpf_trace_vprintk helpers.

   - Extend libbpf's bpf_tracing.h support for tracing arguments of
     kprobes/uprobes and syscall as a special case.

   - Significantly reduce the search time for module symbols by
     livepatch and BPF.

   - Enable cpumasks to be used as kptrs, which is useful for tracing
     programs tracking which tasks end up running on which CPUs in
     different time intervals.

   - Add support for BPF trampoline on s390x and riscv64.

   - Add capability to export the XDP features supported by the NIC.

   - Add __bpf_kfunc tag for marking kernel functions as kfuncs.

   - Add cgroup.memory=nobpf kernel parameter option to disable BPF
     memory accounting for container environments.

  Netfilter:

   - Remove the CLUSTERIP target. It has been marked as obsolete for
     years, and we still have WARN splats wrt races of the out-of-band
     /proc interface installed by this target.

   - Add 'destroy' commands to nf_tables. They are identical to the
     existing 'delete' commands, but do not return an error if the
     referenced object (set, chain, rule...) did not exist.

  Driver API:

   - Improve cpumask_local_spread() locality to help NICs set the right
     IRQ affinity on AMD platforms.

   - Separate C22 and C45 MDIO bus transactions more clearly.

   - Introduce new DCB table to control DSCP rewrite on egress.

   - Support configuration of Physical Layer Collision Avoidance (PLCA)
     Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of
     shared medium Ethernet.

   - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing
     preemption of low priority frames by high priority frames.

   - Add support for controlling MACSec offload using netlink SET.

   - Rework devlink instance refcounts to allow registration and
     de-registration under the instance lock. Split the code into
     multiple files, drop some of the unnecessarily granular locks and
     factor out common parts of netlink operation handling.

   - Add TX frame aggregation parameters (for USB drivers).

   - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning
     messages with notifications for debug.

   - Allow offloading of UDP NEW connections via act_ct.

   - Add support for per action HW stats in TC.

   - Support hardware miss to TC action (continue processing in SW from
     a specific point in the action chain).

   - Warn if old Wireless Extension user space interface is used with
     modern cfg80211/mac80211 drivers. Do not support Wireless
     Extensions for Wi-Fi 7 devices at all. Everyone should switch to
     using nl80211 interface instead.

   - Improve the CAN bit timing configuration. Use extack to return
     error messages directly to user space, update the SJW handling,
     including the definition of a new default value that will benefit
     CAN-FD controllers, by increasing their oscillator tolerance.

  New hardware / drivers:

   - Ethernet:
      - nVidia BlueField-3 support (control traffic driver)
      - Ethernet support for imx93 SoCs
      - Motorcomm yt8531 gigabit Ethernet PHY
      - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA)
      - Microchip LAN8841 PHY (incl. cable diagnostics and PTP)
      - Amlogic gxl MDIO mux

   - WiFi:
      - RealTek RTL8188EU (rtl8xxxu)
      - Qualcomm Wi-Fi 7 devices (ath12k)

   - CAN:
      - Renesas R-Car V4H

  Drivers:

   - Bluetooth:
      - Set Per Platform Antenna Gain (PPAG) for Intel controllers.

   - Ethernet NICs:
      - Intel (1G, igc):
         - support TSN / Qbv / packet scheduling features of i226 model
      - Intel (100G, ice):
         - use GNSS subsystem instead of TTY
         - multi-buffer XDP support
         - extend support for GPIO pins to E823 devices
      - nVidia/Mellanox:
         - update the shared buffer configuration on PFC commands
         - implement PTP adjphase function for HW offset control
         - TC support for Geneve and GRE with VF tunnel offload
         - more efficient crypto key management method
         - multi-port eswitch support
      - Netronome/Corigine:
         - add DCB IEEE support
         - support IPsec offloading for NFP3800
      - Freescale/NXP (enetc):
         - support XDP_REDIRECT for XDP non-linear buffers
         - improve reconfig, avoid link flap and waiting for idle
         - support MAC Merge layer
      - Other NICs:
         - sfc/ef100: add basic devlink support for ef100
         - ionic: rx_push mode operation (writing descriptors via MMIO)
         - bnxt: use the auxiliary bus abstraction for RDMA
         - r8169: disable ASPM and reset bus in case of tx timeout
         - cpsw: support QSGMII mode for J721e CPSW9G
         - cpts: support pulse-per-second output
         - ngbe: add an mdio bus driver
         - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing
         - r8152: handle devices with FW with NCM support
         - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation
         - virtio-net: support multi buffer XDP
         - virtio/vsock: replace virtio_vsock_pkt with sk_buff
         - tsnep: XDP support

   - Ethernet high-speed switches:
      - nVidia/Mellanox (mlxsw):
         - add support for latency TLV (in FW control messages)
      - Microchip (sparx5):
         - separate explicit and implicit traffic forwarding rules, make
           the implicit rules always active
         - add support for egress DSCP rewrite
         - IS0 VCAP support (Ingress Classification)
         - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS
           etc.)
         - ES2 VCAP support (Egress Access Control)
         - support for Per-Stream Filtering and Policing (802.1Q,
           8.6.5.1)

   - Ethernet embedded switches:
      - Marvell (mv88e6xxx):
         - add MAB (port auth) offload support
         - enable PTP receive for mv88e6390
      - NXP (ocelot):
         - support MAC Merge layer
         - support for the the vsc7512 internal copper phys
      - Microchip:
         - lan9303: convert to PHYLINK
         - lan966x: support TC flower filter statistics
         - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x
         - lan937x: support Credit Based Shaper configuration
         - ksz9477: support Energy Efficient Ethernet
      - other:
         - qca8k: convert to regmap read/write API, use bulk operations
         - rswitch: Improve TX timestamp accuracy

   - Intel WiFi (iwlwifi):
      - EHT (Wi-Fi 7) rate reporting
      - STEP equalizer support: transfer some STEP (connection to radio
        on platforms with integrated wifi) related parameters from the
        BIOS to the firmware.

   - Qualcomm 802.11ax WiFi (ath11k):
      - IPQ5018 support
      - Fine Timing Measurement (FTM) responder role support
      - channel 177 support

   - MediaTek WiFi (mt76):
      - per-PHY LED support
      - mt7996: EHT (Wi-Fi 7) support
      - Wireless Ethernet Dispatch (WED) reset support
      - switch to using page pool allocator

   - RealTek WiFi (rtw89):
      - support new version of Bluetooth co-existance

   - Mobile:
      - rmnet: support TX aggregation"

* tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits)
  page_pool: add a comment explaining the fragment counter usage
  net: ethtool: fix __ethtool_dev_mm_supported() implementation
  ethtool: pse-pd: Fix double word in comments
  xsk: add linux/vmalloc.h to xsk.c
  sefltests: netdevsim: wait for devlink instance after netns removal
  selftest: fib_tests: Always cleanup before exit
  net/mlx5e: Align IPsec ASO result memory to be as required by hardware
  net/mlx5e: TC, Set CT miss to the specific ct action instance
  net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG
  net/mlx5: Refactor tc miss handling to a single function
  net/mlx5: Kconfig: Make tc offload depend on tc skb extension
  net/sched: flower: Support hardware miss to tc action
  net/sched: flower: Move filter handle initialization earlier
  net/sched: cls_api: Support hardware miss to tc action
  net/sched: Rename user cookie and act cookie
  sfc: fix builds without CONFIG_RTC_LIB
  sfc: clean up some inconsistent indentings
  net/mlx4_en: Introduce flexible array to silence overflow warning
  net: lan966x: Fix possible deadlock inside PTP
  net/ulp: Remove redundant ->clone() test in inet_clone_ulp().
  ...

1 files changed, 467 insertions, 0 deletions

diff --git a/drivers/edac/zynqmp_edac.c b/drivers/edac/zynqmp_edac.c
new file mode 100644
index 000000000..ac7d1e0b3
--- /dev/null
+++ b/drivers/edac/zynqmp_edac.c
@@ -0,0 +1,467 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Xilinx ZynqMP OCM ECC Driver
+ *
+ * Copyright (C) 2022 Advanced Micro Devices, Inc.
+ */
+
+#include <linux/edac.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+
+#include "edac_module.h"
+
+#define ZYNQMP_OCM_EDAC_MSG_SIZE	256
+
+#define ZYNQMP_OCM_EDAC_STRING	"zynqmp_ocm"
+
+/* Error/Interrupt registers */
+#define ERR_CTRL_OFST		0x0
+#define OCM_ISR_OFST		0x04
+#define OCM_IMR_OFST		0x08
+#define OCM_IEN_OFST		0x0C
+#define OCM_IDS_OFST		0x10
+
+/* ECC control register */
+#define ECC_CTRL_OFST		0x14
+
+/* Correctable error info registers */
+#define CE_FFA_OFST		0x1C
+#define CE_FFD0_OFST		0x20
+#define CE_FFD1_OFST		0x24
+#define CE_FFD2_OFST		0x28
+#define CE_FFD3_OFST		0x2C
+#define CE_FFE_OFST		0x30
+
+/* Uncorrectable error info registers */
+#define UE_FFA_OFST		0x34
+#define UE_FFD0_OFST		0x38
+#define UE_FFD1_OFST		0x3C
+#define UE_FFD2_OFST		0x40
+#define UE_FFD3_OFST		0x44
+#define UE_FFE_OFST		0x48
+
+/* ECC control register bit field definitions */
+#define ECC_CTRL_CLR_CE_ERR	0x40
+#define ECC_CTRL_CLR_UE_ERR	0x80
+
+/* Fault injection data and count registers */
+#define OCM_FID0_OFST		0x4C
+#define OCM_FID1_OFST		0x50
+#define OCM_FID2_OFST		0x54
+#define OCM_FID3_OFST		0x58
+#define OCM_FIC_OFST		0x74
+
+#define UE_MAX_BITPOS_LOWER	31
+#define UE_MIN_BITPOS_UPPER	32
+#define UE_MAX_BITPOS_UPPER	63
+
+/* Interrupt masks */
+#define OCM_CEINTR_MASK		BIT(6)
+#define OCM_UEINTR_MASK		BIT(7)
+#define OCM_ECC_ENABLE_MASK	BIT(0)
+
+#define OCM_FICOUNT_MASK	GENMASK(23, 0)
+#define OCM_NUM_UE_BITPOS	2
+#define OCM_BASEVAL		0xFFFC0000
+#define EDAC_DEVICE		"ZynqMP-OCM"
+
+/**
+ * struct ecc_error_info - ECC error log information
+ * @addr:	Fault generated at this address
+ * @fault_lo:	Generated fault data (lower 32-bit)
+ * @fault_hi:	Generated fault data (upper 32-bit)
+ */
+struct ecc_error_info {
+	u32 addr;
+	u32 fault_lo;
+	u32 fault_hi;
+};
+
+/**
+ * struct ecc_status - ECC status information to report
+ * @ce_cnt:	Correctable error count
+ * @ue_cnt:	Uncorrectable error count
+ * @ceinfo:	Correctable error log information
+ * @ueinfo:	Uncorrectable error log information
+ */
+struct ecc_status {
+	u32 ce_cnt;
+	u32 ue_cnt;
+	struct ecc_error_info ceinfo;
+	struct ecc_error_info ueinfo;
+};
+
+/**
+ * struct edac_priv - OCM private instance data
+ * @baseaddr:	Base address of the OCM
+ * @message:	Buffer for framing the event specific info
+ * @stat:	ECC status information
+ * @ce_cnt:	Correctable Error count
+ * @ue_cnt:	Uncorrectable Error count
+ * @debugfs_dir:	Directory entry for debugfs
+ * @ce_bitpos:	Bit position for Correctable Error
+ * @ue_bitpos:	Array to store UnCorrectable Error bit positions
+ * @fault_injection_cnt: Fault Injection Counter value
+ */
+struct edac_priv {
+	void __iomem *baseaddr;
+	char message[ZYNQMP_OCM_EDAC_MSG_SIZE];
+	struct ecc_status stat;
+	u32 ce_cnt;
+	u32 ue_cnt;
+#ifdef CONFIG_EDAC_DEBUG
+	struct dentry *debugfs_dir;
+	u8 ce_bitpos;
+	u8 ue_bitpos[OCM_NUM_UE_BITPOS];
+	u32 fault_injection_cnt;
+#endif
+};
+
+/**
+ * get_error_info - Get the current ECC error info
+ * @base:	Pointer to the base address of the OCM
+ * @p:		Pointer to the OCM ECC status structure
+ * @mask:	Status register mask value
+ *
+ * Determines there is any ECC error or not
+ *
+ */
+static void get_error_info(void __iomem *base, struct ecc_status *p, int mask)
+{
+	if (mask & OCM_CEINTR_MASK) {
+		p->ce_cnt++;
+		p->ceinfo.fault_lo = readl(base + CE_FFD0_OFST);
+		p->ceinfo.fault_hi = readl(base + CE_FFD1_OFST);
+		p->ceinfo.addr = (OCM_BASEVAL | readl(base + CE_FFA_OFST));
+		writel(ECC_CTRL_CLR_CE_ERR, base + OCM_ISR_OFST);
+	} else if (mask & OCM_UEINTR_MASK) {
+		p->ue_cnt++;
+		p->ueinfo.fault_lo = readl(base + UE_FFD0_OFST);
+		p->ueinfo.fault_hi = readl(base + UE_FFD1_OFST);
+		p->ueinfo.addr = (OCM_BASEVAL | readl(base + UE_FFA_OFST));
+		writel(ECC_CTRL_CLR_UE_ERR, base + OCM_ISR_OFST);
+	}
+}
+
+/**
+ * handle_error - Handle error types CE and UE
+ * @dci:	Pointer to the EDAC device instance
+ * @p:		Pointer to the OCM ECC status structure
+ *
+ * Handles correctable and uncorrectable errors.
+ */
+static void handle_error(struct edac_device_ctl_info *dci, struct ecc_status *p)
+{
+	struct edac_priv *priv = dci->pvt_info;
+	struct ecc_error_info *pinf;
+
+	if (p->ce_cnt) {
+		pinf = &p->ceinfo;
+		snprintf(priv->message, ZYNQMP_OCM_EDAC_MSG_SIZE,
+			 "\nOCM ECC error type :%s\nAddr: [0x%x]\nFault Data[0x%08x%08x]",
+			 "CE", pinf->addr, pinf->fault_hi, pinf->fault_lo);
+		edac_device_handle_ce(dci, 0, 0, priv->message);
+	}
+
+	if (p->ue_cnt) {
+		pinf = &p->ueinfo;
+		snprintf(priv->message, ZYNQMP_OCM_EDAC_MSG_SIZE,
+			 "\nOCM ECC error type :%s\nAddr: [0x%x]\nFault Data[0x%08x%08x]",
+			 "UE", pinf->addr, pinf->fault_hi, pinf->fault_lo);
+		edac_device_handle_ue(dci, 0, 0, priv->message);
+	}
+
+	memset(p, 0, sizeof(*p));
+}
+
+/**
+ * intr_handler - ISR routine
+ * @irq:        irq number
+ * @dev_id:     device id pointer
+ *
+ * Return: IRQ_NONE, if CE/UE interrupt not set or IRQ_HANDLED otherwise
+ */
+static irqreturn_t intr_handler(int irq, void *dev_id)
+{
+	struct edac_device_ctl_info *dci = dev_id;
+	struct edac_priv *priv = dci->pvt_info;
+	int regval;
+
+	regval = readl(priv->baseaddr + OCM_ISR_OFST);
+	if (!(regval & (OCM_CEINTR_MASK | OCM_UEINTR_MASK))) {
+		WARN_ONCE(1, "Unhandled IRQ%d, ISR: 0x%x", irq, regval);
+		return IRQ_NONE;
+	}
+
+	get_error_info(priv->baseaddr, &priv->stat, regval);
+
+	priv->ce_cnt += priv->stat.ce_cnt;
+	priv->ue_cnt += priv->stat.ue_cnt;
+	handle_error(dci, &priv->stat);
+
+	return IRQ_HANDLED;
+}
+
+/**
+ * get_eccstate - Return the ECC status
+ * @base:	Pointer to the OCM base address
+ *
+ * Get the ECC enable/disable status
+ *
+ * Return: ECC status 0/1.
+ */
+static bool get_eccstate(void __iomem *base)
+{
+	return readl(base + ECC_CTRL_OFST) & OCM_ECC_ENABLE_MASK;
+}
+
+#ifdef CONFIG_EDAC_DEBUG
+/**
+ * write_fault_count - write fault injection count
+ * @priv:	Pointer to the EDAC private struct
+ *
+ * Update the fault injection count register, once the counter reaches
+ * zero, it injects errors
+ */
+static void write_fault_count(struct edac_priv *priv)
+{
+	u32 ficount = priv->fault_injection_cnt;
+
+	if (ficount & ~OCM_FICOUNT_MASK) {
+		ficount &= OCM_FICOUNT_MASK;
+		edac_printk(KERN_INFO, EDAC_DEVICE,
+			    "Fault injection count value truncated to %d\n", ficount);
+	}
+
+	writel(ficount, priv->baseaddr + OCM_FIC_OFST);
+}
+
+/*
+ * To get the Correctable Error injected, the following steps are needed:
+ * - Setup the optional Fault Injection Count:
+ *	echo <fault_count val> > /sys/kernel/debug/edac/ocm/inject_fault_count
+ * - Write the Correctable Error bit position value:
+ *	echo <bit_pos val> > /sys/kernel/debug/edac/ocm/inject_ce_bitpos
+ */
+static ssize_t inject_ce_write(struct file *file, const char __user *data,
+			       size_t count, loff_t *ppos)
+{
+	struct edac_device_ctl_info *edac_dev = file->private_data;
+	struct edac_priv *priv = edac_dev->pvt_info;
+	int ret;
+
+	if (!data)
+		return -EFAULT;
+
+	ret = kstrtou8_from_user(data, count, 0, &priv->ce_bitpos);
+	if (ret)
+		return ret;
+
+	if (priv->ce_bitpos > UE_MAX_BITPOS_UPPER)
+		return -EINVAL;
+
+	if (priv->ce_bitpos <= UE_MAX_BITPOS_LOWER) {
+		writel(BIT(priv->ce_bitpos), priv->baseaddr + OCM_FID0_OFST);
+		writel(0, priv->baseaddr + OCM_FID1_OFST);
+	} else {
+		writel(BIT(priv->ce_bitpos - UE_MIN_BITPOS_UPPER),
+		       priv->baseaddr + OCM_FID1_OFST);
+		writel(0, priv->baseaddr + OCM_FID0_OFST);
+	}
+
+	write_fault_count(priv);
+
+	return count;
+}
+
+static const struct file_operations inject_ce_fops = {
+	.open = simple_open,
+	.write = inject_ce_write,
+	.llseek = generic_file_llseek,
+};
+
+/*
+ * To get the Uncorrectable Error injected, the following steps are needed:
+ * - Setup the optional Fault Injection Count:
+ *      echo <fault_count val> > /sys/kernel/debug/edac/ocm/inject_fault_count
+ * - Write the Uncorrectable Error bit position values:
+ *      echo <bit_pos0 val>,<bit_pos1 val> > /sys/kernel/debug/edac/ocm/inject_ue_bitpos
+ */
+static ssize_t inject_ue_write(struct file *file, const char __user *data,
+			       size_t count, loff_t *ppos)
+{
+	struct edac_device_ctl_info *edac_dev = file->private_data;
+	struct edac_priv *priv = edac_dev->pvt_info;
+	char buf[6], *pbuf, *token[2];
+	u64 ue_bitpos;
+	int i, ret;
+	u8 len;
+
+	if (!data)
+		return -EFAULT;
+
+	len = min_t(size_t, count, sizeof(buf));
+	if (copy_from_user(buf, data, len))
+		return -EFAULT;
+
+	buf[len] = '\0';
+	pbuf = &buf[0];
+	for (i = 0; i < OCM_NUM_UE_BITPOS; i++)
+		token[i] = strsep(&pbuf, ",");
+
+	ret = kstrtou8(token[0], 0, &priv->ue_bitpos[0]);
+	if (ret)
+		return ret;
+
+	ret = kstrtou8(token[1], 0, &priv->ue_bitpos[1]);
+	if (ret)
+		return ret;
+
+	if (priv->ue_bitpos[0] > UE_MAX_BITPOS_UPPER ||
+	    priv->ue_bitpos[1] > UE_MAX_BITPOS_UPPER)
+		return -EINVAL;
+
+	if (priv->ue_bitpos[0] == priv->ue_bitpos[1]) {
+		edac_printk(KERN_ERR, EDAC_DEVICE, "Bit positions should not be equal\n");
+		return -EINVAL;
+	}
+
+	ue_bitpos = BIT(priv->ue_bitpos[0]) | BIT(priv->ue_bitpos[1]);
+
+	writel((u32)ue_bitpos, priv->baseaddr + OCM_FID0_OFST);
+	writel((u32)(ue_bitpos >> 32), priv->baseaddr + OCM_FID1_OFST);
+
+	write_fault_count(priv);
+
+	return count;
+}
+
+static const struct file_operations inject_ue_fops = {
+	.open = simple_open,
+	.write = inject_ue_write,
+	.llseek = generic_file_llseek,
+};
+
+static void setup_debugfs(struct edac_device_ctl_info *edac_dev)
+{
+	struct edac_priv *priv = edac_dev->pvt_info;
+
+	priv->debugfs_dir = edac_debugfs_create_dir("ocm");
+	if (!priv->debugfs_dir)
+		return;
+
+	edac_debugfs_create_x32("inject_fault_count", 0644, priv->debugfs_dir,
+				&priv->fault_injection_cnt);
+	edac_debugfs_create_file("inject_ue_bitpos", 0644, priv->debugfs_dir,
+				 edac_dev, &inject_ue_fops);
+	edac_debugfs_create_file("inject_ce_bitpos", 0644, priv->debugfs_dir,
+				 edac_dev, &inject_ce_fops);
+}
+#endif
+
+static int edac_probe(struct platform_device *pdev)
+{
+	struct edac_device_ctl_info *dci;
+	struct edac_priv *priv;
+	void __iomem *baseaddr;
+	struct resource *res;
+	int irq, ret;
+
+	baseaddr = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
+	if (IS_ERR(baseaddr))
+		return PTR_ERR(baseaddr);
+
+	if (!get_eccstate(baseaddr)) {
+		edac_printk(KERN_INFO, EDAC_DEVICE, "ECC not enabled\n");
+		return -ENXIO;
+	}
+
+	dci = edac_device_alloc_ctl_info(sizeof(*priv), ZYNQMP_OCM_EDAC_STRING,
+					 1, ZYNQMP_OCM_EDAC_STRING, 1, 0, NULL, 0,
+					 edac_device_alloc_index());
+	if (!dci)
+		return -ENOMEM;
+
+	priv = dci->pvt_info;
+	platform_set_drvdata(pdev, dci);
+	dci->dev = &pdev->dev;
+	priv->baseaddr = baseaddr;
+	dci->mod_name = pdev->dev.driver->name;
+	dci->ctl_name = ZYNQMP_OCM_EDAC_STRING;
+	dci->dev_name = dev_name(&pdev->dev);
+
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0) {
+		ret = irq;
+		goto free_dev_ctl;
+	}
+
+	ret = devm_request_irq(&pdev->dev, irq, intr_handler, 0,
+			       dev_name(&pdev->dev), dci);
+	if (ret) {
+		edac_printk(KERN_ERR, EDAC_DEVICE, "Failed to request Irq\n");
+		goto free_dev_ctl;
+	}
+
+	/* Enable UE, CE interrupts */
+	writel((OCM_CEINTR_MASK | OCM_UEINTR_MASK), priv->baseaddr + OCM_IEN_OFST);
+
+#ifdef CONFIG_EDAC_DEBUG
+	setup_debugfs(dci);
+#endif
+
+	ret = edac_device_add_device(dci);
+	if (ret)
+		goto free_dev_ctl;
+
+	return 0;
+
+free_dev_ctl:
+	edac_device_free_ctl_info(dci);
+
+	return ret;
+}
+
+static int edac_remove(struct platform_device *pdev)
+{
+	struct edac_device_ctl_info *dci = platform_get_drvdata(pdev);
+	struct edac_priv *priv = dci->pvt_info;
+
+	/* Disable UE, CE interrupts */
+	writel((OCM_CEINTR_MASK | OCM_UEINTR_MASK), priv->baseaddr + OCM_IDS_OFST);
+
+#ifdef CONFIG_EDAC_DEBUG
+	debugfs_remove_recursive(priv->debugfs_dir);
+#endif
+
+	edac_device_del_device(&pdev->dev);
+	edac_device_free_ctl_info(dci);
+
+	return 0;
+}
+
+static const struct of_device_id zynqmp_ocm_edac_match[] = {
+	{ .compatible = "xlnx,zynqmp-ocmc-1.0"},
+	{ /* end of table */ }
+};
+
+MODULE_DEVICE_TABLE(of, zynqmp_ocm_edac_match);
+
+static struct platform_driver zynqmp_ocm_edac_driver = {
+	.driver = {
+		   .name = "zynqmp-ocm-edac",
+		   .of_match_table = zynqmp_ocm_edac_match,
+		   },
+	.probe = edac_probe,
+	.remove = edac_remove,
+};
+
+module_platform_driver(zynqmp_ocm_edac_driver);
+
+MODULE_AUTHOR("Advanced Micro Devices, Inc");
+MODULE_DESCRIPTION("Xilinx ZynqMP OCM ECC driver");
+MODULE_LICENSE("GPL");