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, 803 insertions, 0 deletions

diff --git a/drivers/usb/host/fhci-hcd.c b/drivers/usb/host/fhci-hcd.c
new file mode 100644
index 000000000..92794ffc2
--- /dev/null
+++ b/drivers/usb/host/fhci-hcd.c
@@ -0,0 +1,803 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Freescale QUICC Engine USB Host Controller Driver
+ *
+ * Copyright (c) Freescale Semicondutor, Inc. 2006.
+ *               Shlomi Gridish <gridish@freescale.com>
+ *               Jerry Huang <Chang-Ming.Huang@freescale.com>
+ * Copyright (c) Logic Product Development, Inc. 2007
+ *               Peter Barada <peterb@logicpd.com>
+ * Copyright (c) MontaVista Software, Inc. 2008.
+ *               Anton Vorontsov <avorontsov@ru.mvista.com>
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/spinlock.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/list.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/usb.h>
+#include <linux/usb/hcd.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
+#include <linux/slab.h>
+#include <linux/gpio/consumer.h>
+#include <soc/fsl/qe/qe.h>
+#include <asm/fsl_gtm.h>
+#include "fhci.h"
+
+void fhci_start_sof_timer(struct fhci_hcd *fhci)
+{
+	fhci_dbg(fhci, "-> %s\n", __func__);
+
+	/* clear frame_n */
+	out_be16(&fhci->pram->frame_num, 0);
+
+	out_be16(&fhci->regs->usb_ussft, 0);
+	setbits8(&fhci->regs->usb_usmod, USB_MODE_SFTE);
+
+	fhci_dbg(fhci, "<- %s\n", __func__);
+}
+
+void fhci_stop_sof_timer(struct fhci_hcd *fhci)
+{
+	fhci_dbg(fhci, "-> %s\n", __func__);
+
+	clrbits8(&fhci->regs->usb_usmod, USB_MODE_SFTE);
+	gtm_stop_timer16(fhci->timer);
+
+	fhci_dbg(fhci, "<- %s\n", __func__);
+}
+
+u16 fhci_get_sof_timer_count(struct fhci_usb *usb)
+{
+	return be16_to_cpu(in_be16(&usb->fhci->regs->usb_ussft) / 12);
+}
+
+/* initialize the endpoint zero */
+static u32 endpoint_zero_init(struct fhci_usb *usb,
+			      enum fhci_mem_alloc data_mem,
+			      u32 ring_len)
+{
+	u32 rc;
+
+	rc = fhci_create_ep(usb, data_mem, ring_len);
+	if (rc)
+		return rc;
+
+	/* inilialize endpoint registers */
+	fhci_init_ep_registers(usb, usb->ep0, data_mem);
+
+	return 0;
+}
+
+/* enable the USB interrupts */
+void fhci_usb_enable_interrupt(struct fhci_usb *usb)
+{
+	struct fhci_hcd *fhci = usb->fhci;
+
+	if (usb->intr_nesting_cnt == 1) {
+		/* initialize the USB interrupt */
+		enable_irq(fhci_to_hcd(fhci)->irq);
+
+		/* initialize the event register and mask register */
+		out_be16(&usb->fhci->regs->usb_usber, 0xffff);
+		out_be16(&usb->fhci->regs->usb_usbmr, usb->saved_msk);
+
+		/* enable the timer interrupts */
+		enable_irq(fhci->timer->irq);
+	} else if (usb->intr_nesting_cnt > 1)
+		fhci_info(fhci, "unbalanced USB interrupts nesting\n");
+	usb->intr_nesting_cnt--;
+}
+
+/* disable the usb interrupt */
+void fhci_usb_disable_interrupt(struct fhci_usb *usb)
+{
+	struct fhci_hcd *fhci = usb->fhci;
+
+	if (usb->intr_nesting_cnt == 0) {
+		/* disable the timer interrupt */
+		disable_irq_nosync(fhci->timer->irq);
+
+		/* disable the usb interrupt */
+		disable_irq_nosync(fhci_to_hcd(fhci)->irq);
+		out_be16(&usb->fhci->regs->usb_usbmr, 0);
+	}
+	usb->intr_nesting_cnt++;
+}
+
+/* enable the USB controller */
+static u32 fhci_usb_enable(struct fhci_hcd *fhci)
+{
+	struct fhci_usb *usb = fhci->usb_lld;
+
+	out_be16(&usb->fhci->regs->usb_usber, 0xffff);
+	out_be16(&usb->fhci->regs->usb_usbmr, usb->saved_msk);
+	setbits8(&usb->fhci->regs->usb_usmod, USB_MODE_EN);
+
+	mdelay(100);
+
+	return 0;
+}
+
+/* disable the USB controller */
+static u32 fhci_usb_disable(struct fhci_hcd *fhci)
+{
+	struct fhci_usb *usb = fhci->usb_lld;
+
+	fhci_usb_disable_interrupt(usb);
+	fhci_port_disable(fhci);
+
+	/* disable the usb controller */
+	if (usb->port_status == FHCI_PORT_FULL ||
+			usb->port_status == FHCI_PORT_LOW)
+		fhci_device_disconnected_interrupt(fhci);
+
+	clrbits8(&usb->fhci->regs->usb_usmod, USB_MODE_EN);
+
+	return 0;
+}
+
+/* check the bus state by polling the QE bit on the IO ports */
+int fhci_ioports_check_bus_state(struct fhci_hcd *fhci)
+{
+	u8 bits = 0;
+
+	/* check USBOE,if transmitting,exit */
+	if (!gpiod_get_value(fhci->gpiods[GPIO_USBOE]))
+		return -1;
+
+	/* check USBRP */
+	if (gpiod_get_value(fhci->gpiods[GPIO_USBRP]))
+		bits |= 0x2;
+
+	/* check USBRN */
+	if (gpiod_get_value(fhci->gpiods[GPIO_USBRN]))
+		bits |= 0x1;
+
+	return bits;
+}
+
+static void fhci_mem_free(struct fhci_hcd *fhci)
+{
+	struct ed *ed;
+	struct ed *next_ed;
+	struct td *td;
+	struct td *next_td;
+
+	list_for_each_entry_safe(ed, next_ed, &fhci->empty_eds, node) {
+		list_del(&ed->node);
+		kfree(ed);
+	}
+
+	list_for_each_entry_safe(td, next_td, &fhci->empty_tds, node) {
+		list_del(&td->node);
+		kfree(td);
+	}
+
+	kfree(fhci->vroot_hub);
+	fhci->vroot_hub = NULL;
+
+	kfree(fhci->hc_list);
+	fhci->hc_list = NULL;
+}
+
+static int fhci_mem_init(struct fhci_hcd *fhci)
+{
+	int i;
+
+	fhci->hc_list = kzalloc(sizeof(*fhci->hc_list), GFP_KERNEL);
+	if (!fhci->hc_list)
+		goto err;
+
+	INIT_LIST_HEAD(&fhci->hc_list->ctrl_list);
+	INIT_LIST_HEAD(&fhci->hc_list->bulk_list);
+	INIT_LIST_HEAD(&fhci->hc_list->iso_list);
+	INIT_LIST_HEAD(&fhci->hc_list->intr_list);
+	INIT_LIST_HEAD(&fhci->hc_list->done_list);
+
+	fhci->vroot_hub = kzalloc(sizeof(*fhci->vroot_hub), GFP_KERNEL);
+	if (!fhci->vroot_hub)
+		goto err;
+
+	INIT_LIST_HEAD(&fhci->empty_eds);
+	INIT_LIST_HEAD(&fhci->empty_tds);
+
+	/* initialize work queue to handle done list */
+	fhci_tasklet.data = (unsigned long)fhci;
+	fhci->process_done_task = &fhci_tasklet;
+
+	for (i = 0; i < MAX_TDS; i++) {
+		struct td *td;
+
+		td = kmalloc(sizeof(*td), GFP_KERNEL);
+		if (!td)
+			goto err;
+		fhci_recycle_empty_td(fhci, td);
+	}
+	for (i = 0; i < MAX_EDS; i++) {
+		struct ed *ed;
+
+		ed = kmalloc(sizeof(*ed), GFP_KERNEL);
+		if (!ed)
+			goto err;
+		fhci_recycle_empty_ed(fhci, ed);
+	}
+
+	fhci->active_urbs = 0;
+	return 0;
+err:
+	fhci_mem_free(fhci);
+	return -ENOMEM;
+}
+
+/* destroy the fhci_usb structure */
+static void fhci_usb_free(void *lld)
+{
+	struct fhci_usb *usb = lld;
+	struct fhci_hcd *fhci;
+
+	if (usb) {
+		fhci = usb->fhci;
+		fhci_config_transceiver(fhci, FHCI_PORT_POWER_OFF);
+		fhci_ep0_free(usb);
+		kfree(usb->actual_frame);
+		kfree(usb);
+	}
+}
+
+/* initialize the USB */
+static int fhci_usb_init(struct fhci_hcd *fhci)
+{
+	struct fhci_usb *usb = fhci->usb_lld;
+
+	memset_io(usb->fhci->pram, 0, FHCI_PRAM_SIZE);
+
+	usb->port_status = FHCI_PORT_DISABLED;
+	usb->max_frame_usage = FRAME_TIME_USAGE;
+	usb->sw_transaction_time = SW_FIX_TIME_BETWEEN_TRANSACTION;
+
+	usb->actual_frame = kzalloc(sizeof(*usb->actual_frame), GFP_KERNEL);
+	if (!usb->actual_frame) {
+		fhci_usb_free(usb);
+		return -ENOMEM;
+	}
+
+	INIT_LIST_HEAD(&usb->actual_frame->tds_list);
+
+	/* initializing registers on chip, clear frame number */
+	out_be16(&fhci->pram->frame_num, 0);
+
+	/* clear rx state */
+	out_be32(&fhci->pram->rx_state, 0);
+
+	/* set mask register */
+	usb->saved_msk = (USB_E_TXB_MASK |
+			  USB_E_TXE1_MASK |
+			  USB_E_IDLE_MASK |
+			  USB_E_RESET_MASK | USB_E_SFT_MASK | USB_E_MSF_MASK);
+
+	out_8(&usb->fhci->regs->usb_usmod, USB_MODE_HOST | USB_MODE_EN);
+
+	/* clearing the mask register */
+	out_be16(&usb->fhci->regs->usb_usbmr, 0);
+
+	/* initialing the event register */
+	out_be16(&usb->fhci->regs->usb_usber, 0xffff);
+
+	if (endpoint_zero_init(usb, DEFAULT_DATA_MEM, DEFAULT_RING_LEN) != 0) {
+		fhci_usb_free(usb);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+/* initialize the fhci_usb struct and the corresponding data staruct */
+static struct fhci_usb *fhci_create_lld(struct fhci_hcd *fhci)
+{
+	struct fhci_usb *usb;
+
+	/* allocate memory for SCC data structure */
+	usb = kzalloc(sizeof(*usb), GFP_KERNEL);
+	if (!usb)
+		return NULL;
+
+	usb->fhci = fhci;
+	usb->hc_list = fhci->hc_list;
+	usb->vroot_hub = fhci->vroot_hub;
+
+	usb->transfer_confirm = fhci_transfer_confirm_callback;
+
+	return usb;
+}
+
+static int fhci_start(struct usb_hcd *hcd)
+{
+	int ret;
+	struct fhci_hcd *fhci = hcd_to_fhci(hcd);
+
+	ret = fhci_mem_init(fhci);
+	if (ret) {
+		fhci_err(fhci, "failed to allocate memory\n");
+		goto err;
+	}
+
+	fhci->usb_lld = fhci_create_lld(fhci);
+	if (!fhci->usb_lld) {
+		fhci_err(fhci, "low level driver config failed\n");
+		ret = -ENOMEM;
+		goto err;
+	}
+
+	ret = fhci_usb_init(fhci);
+	if (ret) {
+		fhci_err(fhci, "low level driver initialize failed\n");
+		goto err;
+	}
+
+	spin_lock_init(&fhci->lock);
+
+	/* connect the virtual root hub */
+	fhci->vroot_hub->dev_num = 1;	/* this field may be needed to fix */
+	fhci->vroot_hub->hub.wHubStatus = 0;
+	fhci->vroot_hub->hub.wHubChange = 0;
+	fhci->vroot_hub->port.wPortStatus = 0;
+	fhci->vroot_hub->port.wPortChange = 0;
+
+	hcd->state = HC_STATE_RUNNING;
+
+	/*
+	 * From here on, hub_wq concurrently accesses the root
+	 * hub; drivers will be talking to enumerated devices.
+	 * (On restart paths, hub_wq already knows about the root
+	 * hub and could find work as soon as we wrote FLAG_CF.)
+	 *
+	 * Before this point the HC was idle/ready.  After, hub_wq
+	 * and device drivers may start it running.
+	 */
+	fhci_usb_enable(fhci);
+	return 0;
+err:
+	fhci_mem_free(fhci);
+	return ret;
+}
+
+static void fhci_stop(struct usb_hcd *hcd)
+{
+	struct fhci_hcd *fhci = hcd_to_fhci(hcd);
+
+	fhci_usb_disable_interrupt(fhci->usb_lld);
+	fhci_usb_disable(fhci);
+
+	fhci_usb_free(fhci->usb_lld);
+	fhci->usb_lld = NULL;
+	fhci_mem_free(fhci);
+}
+
+static int fhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb,
+			    gfp_t mem_flags)
+{
+	struct fhci_hcd *fhci = hcd_to_fhci(hcd);
+	u32 pipe = urb->pipe;
+	int ret;
+	int i;
+	int size = 0;
+	struct urb_priv *urb_priv;
+	unsigned long flags;
+
+	switch (usb_pipetype(pipe)) {
+	case PIPE_CONTROL:
+		/* 1 td fro setup,1 for ack */
+		size = 2;
+		fallthrough;
+	case PIPE_BULK:
+		/* one td for every 4096 bytes(can be up to 8k) */
+		size += urb->transfer_buffer_length / 4096;
+		/* ...add for any remaining bytes... */
+		if ((urb->transfer_buffer_length % 4096) != 0)
+			size++;
+		/* ..and maybe a zero length packet to wrap it up */
+		if (size == 0)
+			size++;
+		else if ((urb->transfer_flags & URB_ZERO_PACKET) != 0
+			 && (urb->transfer_buffer_length
+			     % usb_maxpacket(urb->dev, pipe)) != 0)
+			size++;
+		break;
+	case PIPE_ISOCHRONOUS:
+		size = urb->number_of_packets;
+		if (size <= 0)
+			return -EINVAL;
+		for (i = 0; i < urb->number_of_packets; i++) {
+			urb->iso_frame_desc[i].actual_length = 0;
+			urb->iso_frame_desc[i].status = (u32) (-EXDEV);
+		}
+		break;
+	case PIPE_INTERRUPT:
+		size = 1;
+	}
+
+	/* allocate the private part of the URB */
+	urb_priv = kzalloc(sizeof(*urb_priv), mem_flags);
+	if (!urb_priv)
+		return -ENOMEM;
+
+	/* allocate the private part of the URB */
+	urb_priv->tds = kcalloc(size, sizeof(*urb_priv->tds), mem_flags);
+	if (!urb_priv->tds) {
+		kfree(urb_priv);
+		return -ENOMEM;
+	}
+
+	spin_lock_irqsave(&fhci->lock, flags);
+
+	ret = usb_hcd_link_urb_to_ep(hcd, urb);
+	if (ret)
+		goto err;
+
+	/* fill the private part of the URB */
+	urb_priv->num_of_tds = size;
+
+	urb->status = -EINPROGRESS;
+	urb->actual_length = 0;
+	urb->error_count = 0;
+	urb->hcpriv = urb_priv;
+
+	fhci_queue_urb(fhci, urb);
+err:
+	if (ret) {
+		kfree(urb_priv->tds);
+		kfree(urb_priv);
+	}
+	spin_unlock_irqrestore(&fhci->lock, flags);
+	return ret;
+}
+
+/* dequeue FHCI URB */
+static int fhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
+{
+	struct fhci_hcd *fhci = hcd_to_fhci(hcd);
+	struct fhci_usb *usb = fhci->usb_lld;
+	int ret = -EINVAL;
+	unsigned long flags;
+
+	if (!urb || !urb->dev || !urb->dev->bus)
+		goto out;
+
+	spin_lock_irqsave(&fhci->lock, flags);
+
+	ret = usb_hcd_check_unlink_urb(hcd, urb, status);
+	if (ret)
+		goto out2;
+
+	if (usb->port_status != FHCI_PORT_DISABLED) {
+		struct urb_priv *urb_priv;
+
+		/*
+		 * flag the urb's data for deletion in some upcoming
+		 * SF interrupt's delete list processing
+		 */
+		urb_priv = urb->hcpriv;
+
+		if (!urb_priv || (urb_priv->state == URB_DEL))
+			goto out2;
+
+		urb_priv->state = URB_DEL;
+
+		/* already pending? */
+		urb_priv->ed->state = FHCI_ED_URB_DEL;
+	} else {
+		fhci_urb_complete_free(fhci, urb);
+	}
+
+out2:
+	spin_unlock_irqrestore(&fhci->lock, flags);
+out:
+	return ret;
+}
+
+static void fhci_endpoint_disable(struct usb_hcd *hcd,
+				  struct usb_host_endpoint *ep)
+{
+	struct fhci_hcd *fhci;
+	struct ed *ed;
+	unsigned long flags;
+
+	fhci = hcd_to_fhci(hcd);
+	spin_lock_irqsave(&fhci->lock, flags);
+	ed = ep->hcpriv;
+	if (ed) {
+		while (ed->td_head != NULL) {
+			struct td *td = fhci_remove_td_from_ed(ed);
+			fhci_urb_complete_free(fhci, td->urb);
+		}
+		fhci_recycle_empty_ed(fhci, ed);
+		ep->hcpriv = NULL;
+	}
+	spin_unlock_irqrestore(&fhci->lock, flags);
+}
+
+static int fhci_get_frame_number(struct usb_hcd *hcd)
+{
+	struct fhci_hcd *fhci = hcd_to_fhci(hcd);
+
+	return get_frame_num(fhci);
+}
+
+static const struct hc_driver fhci_driver = {
+	.description = "fsl,usb-fhci",
+	.product_desc = "FHCI HOST Controller",
+	.hcd_priv_size = sizeof(struct fhci_hcd),
+
+	/* generic hardware linkage */
+	.irq = fhci_irq,
+	.flags = HCD_DMA | HCD_USB11 | HCD_MEMORY,
+
+	/* basic lifecycle operation */
+	.start = fhci_start,
+	.stop = fhci_stop,
+
+	/* managing i/o requests and associated device resources */
+	.urb_enqueue = fhci_urb_enqueue,
+	.urb_dequeue = fhci_urb_dequeue,
+	.endpoint_disable = fhci_endpoint_disable,
+
+	/* scheduling support */
+	.get_frame_number = fhci_get_frame_number,
+
+	/* root hub support */
+	.hub_status_data = fhci_hub_status_data,
+	.hub_control = fhci_hub_control,
+};
+
+static int of_fhci_probe(struct platform_device *ofdev)
+{
+	struct device *dev = &ofdev->dev;
+	struct device_node *node = dev->of_node;
+	struct usb_hcd *hcd;
+	struct fhci_hcd *fhci;
+	struct resource usb_regs;
+	unsigned long pram_addr;
+	unsigned int usb_irq;
+	const char *sprop;
+	const u32 *iprop;
+	int size;
+	int ret;
+	int i;
+	int j;
+
+	if (usb_disabled())
+		return -ENODEV;
+
+	sprop = of_get_property(node, "mode", NULL);
+	if (sprop && strcmp(sprop, "host"))
+		return -ENODEV;
+
+	hcd = usb_create_hcd(&fhci_driver, dev, dev_name(dev));
+	if (!hcd) {
+		dev_err(dev, "could not create hcd\n");
+		return -ENOMEM;
+	}
+
+	fhci = hcd_to_fhci(hcd);
+	hcd->self.controller = dev;
+	dev_set_drvdata(dev, hcd);
+
+	iprop = of_get_property(node, "hub-power-budget", &size);
+	if (iprop && size == sizeof(*iprop))
+		hcd->power_budget = *iprop;
+
+	/* FHCI registers. */
+	ret = of_address_to_resource(node, 0, &usb_regs);
+	if (ret) {
+		dev_err(dev, "could not get regs\n");
+		goto err_regs;
+	}
+
+	hcd->regs = ioremap(usb_regs.start, resource_size(&usb_regs));
+	if (!hcd->regs) {
+		dev_err(dev, "could not ioremap regs\n");
+		ret = -ENOMEM;
+		goto err_regs;
+	}
+	fhci->regs = hcd->regs;
+
+	/* Parameter RAM. */
+	iprop = of_get_property(node, "reg", &size);
+	if (!iprop || size < sizeof(*iprop) * 4) {
+		dev_err(dev, "can't get pram offset\n");
+		ret = -EINVAL;
+		goto err_pram;
+	}
+
+	pram_addr = cpm_muram_alloc(FHCI_PRAM_SIZE, 64);
+	if (IS_ERR_VALUE(pram_addr)) {
+		dev_err(dev, "failed to allocate usb pram\n");
+		ret = -ENOMEM;
+		goto err_pram;
+	}
+
+	qe_issue_cmd(QE_ASSIGN_PAGE_TO_DEVICE, QE_CR_SUBBLOCK_USB,
+		     QE_CR_PROTOCOL_UNSPECIFIED, pram_addr);
+	fhci->pram = cpm_muram_addr(pram_addr);
+
+	/* GPIOs and pins */
+	for (i = 0; i < NUM_GPIOS; i++) {
+		if (i < GPIO_SPEED)
+			fhci->gpiods[i] = devm_gpiod_get_index(dev,
+					NULL, i, GPIOD_IN);
+
+		else
+			fhci->gpiods[i] = devm_gpiod_get_index_optional(dev,
+					NULL, i, GPIOD_OUT_LOW);
+
+		if (IS_ERR(fhci->gpiods[i])) {
+			dev_err(dev, "incorrect GPIO%d: %ld\n",
+				i, PTR_ERR(fhci->gpiods[i]));
+			goto err_gpios;
+		}
+		if (!fhci->gpiods[i]) {
+			dev_info(dev, "assuming board doesn't have "
+				 "%s gpio\n", i == GPIO_SPEED ?
+				 "speed" : "power");
+		}
+	}
+
+	for (j = 0; j < NUM_PINS; j++) {
+		fhci->pins[j] = qe_pin_request(dev, j);
+		if (IS_ERR(fhci->pins[j])) {
+			ret = PTR_ERR(fhci->pins[j]);
+			dev_err(dev, "can't get pin %d: %d\n", j, ret);
+			goto err_pins;
+		}
+	}
+
+	/* Frame limit timer and its interrupt. */
+	fhci->timer = gtm_get_timer16();
+	if (IS_ERR(fhci->timer)) {
+		ret = PTR_ERR(fhci->timer);
+		dev_err(dev, "failed to request qe timer: %i", ret);
+		goto err_get_timer;
+	}
+
+	ret = request_irq(fhci->timer->irq, fhci_frame_limit_timer_irq,
+			  0, "qe timer (usb)", hcd);
+	if (ret) {
+		dev_err(dev, "failed to request timer irq");
+		goto err_timer_irq;
+	}
+
+	/* USB Host interrupt. */
+	usb_irq = irq_of_parse_and_map(node, 0);
+	if (!usb_irq) {
+		dev_err(dev, "could not get usb irq\n");
+		ret = -EINVAL;
+		goto err_usb_irq;
+	}
+
+	/* Clocks. */
+	sprop = of_get_property(node, "fsl,fullspeed-clock", NULL);
+	if (sprop) {
+		fhci->fullspeed_clk = qe_clock_source(sprop);
+		if (fhci->fullspeed_clk == QE_CLK_DUMMY) {
+			dev_err(dev, "wrong fullspeed-clock\n");
+			ret = -EINVAL;
+			goto err_clocks;
+		}
+	}
+
+	sprop = of_get_property(node, "fsl,lowspeed-clock", NULL);
+	if (sprop) {
+		fhci->lowspeed_clk = qe_clock_source(sprop);
+		if (fhci->lowspeed_clk == QE_CLK_DUMMY) {
+			dev_err(dev, "wrong lowspeed-clock\n");
+			ret = -EINVAL;
+			goto err_clocks;
+		}
+	}
+
+	if (fhci->fullspeed_clk == QE_CLK_NONE &&
+			fhci->lowspeed_clk == QE_CLK_NONE) {
+		dev_err(dev, "no clocks specified\n");
+		ret = -EINVAL;
+		goto err_clocks;
+	}
+
+	dev_info(dev, "at 0x%p, irq %d\n", hcd->regs, usb_irq);
+
+	fhci_config_transceiver(fhci, FHCI_PORT_POWER_OFF);
+
+	/* Start with full-speed, if possible. */
+	if (fhci->fullspeed_clk != QE_CLK_NONE) {
+		fhci_config_transceiver(fhci, FHCI_PORT_FULL);
+		qe_usb_clock_set(fhci->fullspeed_clk, USB_CLOCK);
+	} else {
+		fhci_config_transceiver(fhci, FHCI_PORT_LOW);
+		qe_usb_clock_set(fhci->lowspeed_clk, USB_CLOCK >> 3);
+	}
+
+	/* Clear and disable any pending interrupts. */
+	out_be16(&fhci->regs->usb_usber, 0xffff);
+	out_be16(&fhci->regs->usb_usbmr, 0);
+
+	ret = usb_add_hcd(hcd, usb_irq, 0);
+	if (ret < 0)
+		goto err_add_hcd;
+
+	device_wakeup_enable(hcd->self.controller);
+
+	fhci_dfs_create(fhci);
+
+	return 0;
+
+err_add_hcd:
+err_clocks:
+	irq_dispose_mapping(usb_irq);
+err_usb_irq:
+	free_irq(fhci->timer->irq, hcd);
+err_timer_irq:
+	gtm_put_timer16(fhci->timer);
+err_get_timer:
+err_pins:
+	while (--j >= 0)
+		qe_pin_free(fhci->pins[j]);
+err_gpios:
+	cpm_muram_free(pram_addr);
+err_pram:
+	iounmap(hcd->regs);
+err_regs:
+	usb_put_hcd(hcd);
+	return ret;
+}
+
+static int fhci_remove(struct device *dev)
+{
+	struct usb_hcd *hcd = dev_get_drvdata(dev);
+	struct fhci_hcd *fhci = hcd_to_fhci(hcd);
+	int j;
+
+	usb_remove_hcd(hcd);
+	free_irq(fhci->timer->irq, hcd);
+	gtm_put_timer16(fhci->timer);
+	cpm_muram_free(cpm_muram_offset(fhci->pram));
+	for (j = 0; j < NUM_PINS; j++)
+		qe_pin_free(fhci->pins[j]);
+	fhci_dfs_destroy(fhci);
+	usb_put_hcd(hcd);
+	return 0;
+}
+
+static int of_fhci_remove(struct platform_device *ofdev)
+{
+	return fhci_remove(&ofdev->dev);
+}
+
+static const struct of_device_id of_fhci_match[] = {
+	{ .compatible = "fsl,mpc8323-qe-usb", },
+	{},
+};
+MODULE_DEVICE_TABLE(of, of_fhci_match);
+
+static struct platform_driver of_fhci_driver = {
+	.driver = {
+		.name = "fsl,usb-fhci",
+		.of_match_table = of_fhci_match,
+	},
+	.probe		= of_fhci_probe,
+	.remove		= of_fhci_remove,
+};
+
+module_platform_driver(of_fhci_driver);
+
+MODULE_DESCRIPTION("USB Freescale Host Controller Interface Driver");
+MODULE_AUTHOR("Shlomi Gridish <gridish@freescale.com>, "
+	      "Jerry Huang <Chang-Ming.Huang@freescale.com>, "
+	      "Anton Vorontsov <avorontsov@ru.mvista.com>");
+MODULE_LICENSE("GPL");