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, 792 insertions, 0 deletions

diff --git a/drivers/macintosh/macio_asic.c b/drivers/macintosh/macio_asic.c
new file mode 100644
index 000000000..3bc1f374e
--- /dev/null
+++ b/drivers/macintosh/macio_asic.c
@@ -0,0 +1,792 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Bus & driver management routines for devices within
+ * a MacIO ASIC. Interface to new driver model mostly
+ * stolen from the PCI version.
+ * 
+ *  Copyright (C) 2005 Ben. Herrenschmidt (benh@kernel.crashing.org)
+ *
+ * TODO:
+ * 
+ *  - Don't probe below media bay by default, but instead provide
+ *    some hooks for media bay to dynamically add/remove it's own
+ *    sub-devices.
+ */
+ 
+#include <linux/string.h>
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/pci_ids.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/of_irq.h>
+
+#include <asm/machdep.h>
+#include <asm/macio.h>
+#include <asm/pmac_feature.h>
+
+#undef DEBUG
+
+#define MAX_NODE_NAME_SIZE (20 - 12)
+
+static struct macio_chip      *macio_on_hold;
+
+static int macio_bus_match(struct device *dev, struct device_driver *drv) 
+{
+	const struct of_device_id * matches = drv->of_match_table;
+
+	if (!matches) 
+		return 0;
+
+	return of_match_device(matches, dev) != NULL;
+}
+
+struct macio_dev *macio_dev_get(struct macio_dev *dev)
+{
+	struct device *tmp;
+
+	if (!dev)
+		return NULL;
+	tmp = get_device(&dev->ofdev.dev);
+	if (tmp)
+		return to_macio_device(tmp);
+	else
+		return NULL;
+}
+
+void macio_dev_put(struct macio_dev *dev)
+{
+	if (dev)
+		put_device(&dev->ofdev.dev);
+}
+
+
+static int macio_device_probe(struct device *dev)
+{
+	int error = -ENODEV;
+	struct macio_driver *drv;
+	struct macio_dev *macio_dev;
+	const struct of_device_id *match;
+
+	drv = to_macio_driver(dev->driver);
+	macio_dev = to_macio_device(dev);
+
+	if (!drv->probe)
+		return error;
+
+	macio_dev_get(macio_dev);
+
+	match = of_match_device(drv->driver.of_match_table, dev);
+	if (match)
+		error = drv->probe(macio_dev, match);
+	if (error)
+		macio_dev_put(macio_dev);
+
+	return error;
+}
+
+static void macio_device_remove(struct device *dev)
+{
+	struct macio_dev * macio_dev = to_macio_device(dev);
+	struct macio_driver * drv = to_macio_driver(dev->driver);
+
+	if (dev->driver && drv->remove)
+		drv->remove(macio_dev);
+	macio_dev_put(macio_dev);
+}
+
+static void macio_device_shutdown(struct device *dev)
+{
+	struct macio_dev * macio_dev = to_macio_device(dev);
+	struct macio_driver * drv = to_macio_driver(dev->driver);
+
+	if (dev->driver && drv->shutdown)
+		drv->shutdown(macio_dev);
+}
+
+static int macio_device_suspend(struct device *dev, pm_message_t state)
+{
+	struct macio_dev * macio_dev = to_macio_device(dev);
+	struct macio_driver * drv = to_macio_driver(dev->driver);
+
+	if (dev->driver && drv->suspend)
+		return drv->suspend(macio_dev, state);
+	return 0;
+}
+
+static int macio_device_resume(struct device * dev)
+{
+	struct macio_dev * macio_dev = to_macio_device(dev);
+	struct macio_driver * drv = to_macio_driver(dev->driver);
+
+	if (dev->driver && drv->resume)
+		return drv->resume(macio_dev);
+	return 0;
+}
+
+extern const struct attribute_group *macio_dev_groups[];
+
+struct bus_type macio_bus_type = {
+       .name	= "macio",
+       .match	= macio_bus_match,
+       .uevent = of_device_uevent_modalias,
+       .probe	= macio_device_probe,
+       .remove	= macio_device_remove,
+       .shutdown = macio_device_shutdown,
+       .suspend	= macio_device_suspend,
+       .resume	= macio_device_resume,
+       .dev_groups = macio_dev_groups,
+};
+
+static int __init macio_bus_driver_init(void)
+{
+	return bus_register(&macio_bus_type);
+}
+
+postcore_initcall(macio_bus_driver_init);
+
+
+/**
+ * macio_release_dev - free a macio device structure when all users of it are
+ * finished.
+ * @dev: device that's been disconnected
+ *
+ * Will be called only by the device core when all users of this macio device
+ * are done. This currently means never as we don't hot remove any macio
+ * device yet, though that will happen with mediabay based devices in a later
+ * implementation.
+ */
+static void macio_release_dev(struct device *dev)
+{
+	struct macio_dev *mdev;
+
+        mdev = to_macio_device(dev);
+	kfree(mdev);
+}
+
+/**
+ * macio_resource_quirks - tweak or skip some resources for a device
+ * @np: pointer to the device node
+ * @res: resulting resource
+ * @index: index of resource in node
+ *
+ * If this routine returns non-null, then the resource is completely
+ * skipped.
+ */
+static int macio_resource_quirks(struct device_node *np, struct resource *res,
+				 int index)
+{
+	/* Only quirks for memory resources for now */
+	if ((res->flags & IORESOURCE_MEM) == 0)
+		return 0;
+
+	/* Grand Central has too large resource 0 on some machines */
+	if (index == 0 && of_node_name_eq(np, "gc"))
+		res->end = res->start + 0x1ffff;
+
+	/* Airport has bogus resource 2 */
+	if (index >= 2 && of_node_name_eq(np, "radio"))
+		return 1;
+
+#ifndef CONFIG_PPC64
+	/* DBDMAs may have bogus sizes */
+	if ((res->start & 0x0001f000) == 0x00008000)
+		res->end = res->start + 0xff;
+#endif /* CONFIG_PPC64 */
+
+	/* ESCC parent eats child resources. We could have added a
+	 * level of hierarchy, but I don't really feel the need
+	 * for it
+	 */
+	if (of_node_name_eq(np, "escc"))
+		return 1;
+
+	/* ESCC has bogus resources >= 3 */
+	if (index >= 3 && (of_node_name_eq(np, "ch-a") ||
+			   of_node_name_eq(np, "ch-b")))
+		return 1;
+
+	/* Media bay has too many resources, keep only first one */
+	if (index > 0 && of_node_name_eq(np, "media-bay"))
+		return 1;
+
+	/* Some older IDE resources have bogus sizes */
+	if (of_node_name_eq(np, "IDE") || of_node_name_eq(np, "ATA") ||
+	    of_node_is_type(np, "ide") || of_node_is_type(np, "ata")) {
+		if (index == 0 && (res->end - res->start) > 0xfff)
+			res->end = res->start + 0xfff;
+		if (index == 1 && (res->end - res->start) > 0xff)
+			res->end = res->start + 0xff;
+	}
+	return 0;
+}
+
+static void macio_create_fixup_irq(struct macio_dev *dev, int index,
+				   unsigned int line)
+{
+	unsigned int irq;
+
+	irq = irq_create_mapping(NULL, line);
+	if (!irq) {
+		dev->interrupt[index].start = irq;
+		dev->interrupt[index].flags = IORESOURCE_IRQ;
+		dev->interrupt[index].name = dev_name(&dev->ofdev.dev);
+	}
+	if (dev->n_interrupts <= index)
+		dev->n_interrupts = index + 1;
+}
+
+static void macio_add_missing_resources(struct macio_dev *dev)
+{
+	struct device_node *np = dev->ofdev.dev.of_node;
+	unsigned int irq_base;
+
+	/* Gatwick has some missing interrupts on child nodes */
+	if (dev->bus->chip->type != macio_gatwick)
+		return;
+
+	/* irq_base is always 64 on gatwick. I have no cleaner way to get
+	 * that value from here at this point
+	 */
+	irq_base = 64;
+
+	/* Fix SCC */
+	if (of_node_name_eq(np, "ch-a")) {
+		macio_create_fixup_irq(dev, 0, 15 + irq_base);
+		macio_create_fixup_irq(dev, 1,  4 + irq_base);
+		macio_create_fixup_irq(dev, 2,  5 + irq_base);
+		printk(KERN_INFO "macio: fixed SCC irqs on gatwick\n");
+	}
+
+	/* Fix media-bay */
+	if (of_node_name_eq(np, "media-bay")) {
+		macio_create_fixup_irq(dev, 0, 29 + irq_base);
+		printk(KERN_INFO "macio: fixed media-bay irq on gatwick\n");
+	}
+
+	/* Fix left media bay childs */
+	if (dev->media_bay != NULL && of_node_name_eq(np, "floppy")) {
+		macio_create_fixup_irq(dev, 0, 19 + irq_base);
+		macio_create_fixup_irq(dev, 1,  1 + irq_base);
+		printk(KERN_INFO "macio: fixed left floppy irqs\n");
+	}
+	if (dev->media_bay != NULL && of_node_name_eq(np, "ata4")) {
+		macio_create_fixup_irq(dev, 0, 14 + irq_base);
+		macio_create_fixup_irq(dev, 0,  3 + irq_base);
+		printk(KERN_INFO "macio: fixed left ide irqs\n");
+	}
+}
+
+static void macio_setup_interrupts(struct macio_dev *dev)
+{
+	struct device_node *np = dev->ofdev.dev.of_node;
+	unsigned int irq;
+	int i = 0, j = 0;
+
+	for (;;) {
+		struct resource *res;
+
+		if (j >= MACIO_DEV_COUNT_IRQS)
+			break;
+		res = &dev->interrupt[j];
+		irq = irq_of_parse_and_map(np, i++);
+		if (!irq)
+			break;
+		res->start = irq;
+		res->flags = IORESOURCE_IRQ;
+		res->name = dev_name(&dev->ofdev.dev);
+		if (macio_resource_quirks(np, res, i - 1)) {
+			memset(res, 0, sizeof(struct resource));
+			continue;
+		} else
+			j++;
+	}
+	dev->n_interrupts = j;
+}
+
+static void macio_setup_resources(struct macio_dev *dev,
+				  struct resource *parent_res)
+{
+	struct device_node *np = dev->ofdev.dev.of_node;
+	struct resource r;
+	int index;
+
+	for (index = 0; of_address_to_resource(np, index, &r) == 0; index++) {
+		struct resource *res;
+		if (index >= MACIO_DEV_COUNT_RESOURCES)
+			break;
+		res = &dev->resource[index];
+		*res = r;
+		res->name = dev_name(&dev->ofdev.dev);
+
+		if (macio_resource_quirks(np, res, index)) {
+			memset(res, 0, sizeof(struct resource));
+			continue;
+		}
+		/* Currently, we consider failure as harmless, this may
+		 * change in the future, once I've found all the device
+		 * tree bugs in older machines & worked around them
+		 */
+		if (insert_resource(parent_res, res)) {
+			printk(KERN_WARNING "Can't request resource "
+			       "%d for MacIO device %s\n",
+			       index, dev_name(&dev->ofdev.dev));
+		}
+	}
+	dev->n_resources = index;
+}
+
+/**
+ * macio_add_one_device - Add one device from OF node to the device tree
+ * @chip: pointer to the macio_chip holding the device
+ * @np: pointer to the device node in the OF tree
+ * @in_bay: set to 1 if device is part of a media-bay
+ *
+ * When media-bay is changed to hotswap drivers, this function will
+ * be exposed to the bay driver some way...
+ */
+static struct macio_dev * macio_add_one_device(struct macio_chip *chip,
+					       struct device *parent,
+					       struct device_node *np,
+					       struct macio_dev *in_bay,
+					       struct resource *parent_res)
+{
+	char name[MAX_NODE_NAME_SIZE + 1];
+	struct macio_dev *dev;
+	const u32 *reg;
+
+	if (np == NULL)
+		return NULL;
+
+	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+	if (!dev)
+		return NULL;
+
+	dev->bus = &chip->lbus;
+	dev->media_bay = in_bay;
+	dev->ofdev.dev.of_node = np;
+	dev->ofdev.archdata.dma_mask = 0xffffffffUL;
+	dev->ofdev.dev.dma_mask = &dev->ofdev.archdata.dma_mask;
+	dev->ofdev.dev.coherent_dma_mask = dev->ofdev.archdata.dma_mask;
+	dev->ofdev.dev.parent = parent;
+	dev->ofdev.dev.bus = &macio_bus_type;
+	dev->ofdev.dev.release = macio_release_dev;
+	dev->ofdev.dev.dma_parms = &dev->dma_parms;
+
+	/* Standard DMA paremeters */
+	dma_set_max_seg_size(&dev->ofdev.dev, 65536);
+	dma_set_seg_boundary(&dev->ofdev.dev, 0xffffffff);
+
+#if defined(CONFIG_PCI) && defined(CONFIG_DMA_OPS)
+	/* Set the DMA ops to the ones from the PCI device, this could be
+	 * fishy if we didn't know that on PowerMac it's always direct ops
+	 * or iommu ops that will work fine
+	 *
+	 * To get all the fields, copy all archdata
+	 */
+	dev->ofdev.dev.archdata = chip->lbus.pdev->dev.archdata;
+	dev->ofdev.dev.dma_ops = chip->lbus.pdev->dev.dma_ops;
+#endif /* CONFIG_PCI && CONFIG_DMA_OPS */
+
+#ifdef DEBUG
+	printk("preparing mdev @%p, ofdev @%p, dev @%p, kobj @%p\n",
+	       dev, &dev->ofdev, &dev->ofdev.dev, &dev->ofdev.dev.kobj);
+#endif
+
+	/* MacIO itself has a different reg, we use it's PCI base */
+	snprintf(name, sizeof(name), "%pOFn", np);
+	if (np == chip->of_node) {
+		dev_set_name(&dev->ofdev.dev, "%1d.%08x:%.*s",
+			     chip->lbus.index,
+#ifdef CONFIG_PCI
+			(unsigned int)pci_resource_start(chip->lbus.pdev, 0),
+#else
+			0, /* NuBus may want to do something better here */
+#endif
+			MAX_NODE_NAME_SIZE, name);
+	} else {
+		reg = of_get_property(np, "reg", NULL);
+		dev_set_name(&dev->ofdev.dev, "%1d.%08x:%.*s",
+			     chip->lbus.index,
+			     reg ? *reg : 0, MAX_NODE_NAME_SIZE, name);
+	}
+
+	/* Setup interrupts & resources */
+	macio_setup_interrupts(dev);
+	macio_setup_resources(dev, parent_res);
+	macio_add_missing_resources(dev);
+
+	/* Register with core */
+	if (of_device_register(&dev->ofdev) != 0) {
+		printk(KERN_DEBUG"macio: device registration error for %s!\n",
+		       dev_name(&dev->ofdev.dev));
+		put_device(&dev->ofdev.dev);
+		return NULL;
+	}
+
+	return dev;
+}
+
+static int macio_skip_device(struct device_node *np)
+{
+	return of_node_name_prefix(np, "battery") ||
+	       of_node_name_prefix(np, "escc-legacy");
+}
+
+/**
+ * macio_pci_add_devices - Adds sub-devices of mac-io to the device tree
+ * @chip: pointer to the macio_chip holding the devices
+ * 
+ * This function will do the job of extracting devices from the
+ * Open Firmware device tree, build macio_dev structures and add
+ * them to the Linux device tree.
+ * 
+ * For now, childs of media-bay are added now as well. This will
+ * change rsn though.
+ */
+static void macio_pci_add_devices(struct macio_chip *chip)
+{
+	struct device_node *np, *pnode;
+	struct macio_dev *rdev, *mdev, *mbdev = NULL, *sdev = NULL;
+	struct device *parent = NULL;
+	struct resource *root_res = &iomem_resource;
+	
+	/* Add a node for the macio bus itself */
+#ifdef CONFIG_PCI
+	if (chip->lbus.pdev) {
+		parent = &chip->lbus.pdev->dev;
+		root_res = &chip->lbus.pdev->resource[0];
+	}
+#endif
+	pnode = of_node_get(chip->of_node);
+	if (pnode == NULL)
+		return;
+
+	/* Add macio itself to hierarchy */
+	rdev = macio_add_one_device(chip, parent, pnode, NULL, root_res);
+	if (rdev == NULL)
+		return;
+	root_res = &rdev->resource[0];
+
+	/* First scan 1st level */
+	for_each_child_of_node(pnode, np) {
+		if (macio_skip_device(np))
+			continue;
+		of_node_get(np);
+		mdev = macio_add_one_device(chip, &rdev->ofdev.dev, np, NULL,
+					    root_res);
+		if (mdev == NULL)
+			of_node_put(np);
+		else if (of_node_name_prefix(np, "media-bay"))
+			mbdev = mdev;
+		else if (of_node_name_prefix(np, "escc"))
+			sdev = mdev;
+	}
+
+	/* Add media bay devices if any */
+	if (mbdev) {
+		pnode = mbdev->ofdev.dev.of_node;
+		for_each_child_of_node(pnode, np) {
+			if (macio_skip_device(np))
+				continue;
+			of_node_get(np);
+			if (macio_add_one_device(chip, &mbdev->ofdev.dev, np,
+						 mbdev,  root_res) == NULL)
+				of_node_put(np);
+		}
+	}
+
+	/* Add serial ports if any */
+	if (sdev) {
+		pnode = sdev->ofdev.dev.of_node;
+		for_each_child_of_node(pnode, np) {
+			if (macio_skip_device(np))
+				continue;
+			of_node_get(np);
+			if (macio_add_one_device(chip, &sdev->ofdev.dev, np,
+						 NULL, root_res) == NULL)
+				of_node_put(np);
+		}
+	}
+}
+
+
+/**
+ * macio_register_driver - Registers a new MacIO device driver
+ * @drv: pointer to the driver definition structure
+ */
+int macio_register_driver(struct macio_driver *drv)
+{
+	/* initialize common driver fields */
+	drv->driver.bus = &macio_bus_type;
+
+	/* register with core */
+	return driver_register(&drv->driver);
+}
+
+/**
+ * macio_unregister_driver - Unregisters a new MacIO device driver
+ * @drv: pointer to the driver definition structure
+ */
+void macio_unregister_driver(struct macio_driver *drv)
+{
+	driver_unregister(&drv->driver);
+}
+
+/* Managed MacIO resources */
+struct macio_devres {
+	u32	res_mask;
+};
+
+static void maciom_release(struct device *gendev, void *res)
+{
+	struct macio_dev *dev = to_macio_device(gendev);
+	struct macio_devres *dr = res;
+	int i, max;
+
+	max = min(dev->n_resources, 32);
+	for (i = 0; i < max; i++) {
+		if (dr->res_mask & (1 << i))
+			macio_release_resource(dev, i);
+	}
+}
+
+int macio_enable_devres(struct macio_dev *dev)
+{
+	struct macio_devres *dr;
+
+	dr = devres_find(&dev->ofdev.dev, maciom_release, NULL, NULL);
+	if (!dr) {
+		dr = devres_alloc(maciom_release, sizeof(*dr), GFP_KERNEL);
+		if (!dr)
+			return -ENOMEM;
+	}
+	return devres_get(&dev->ofdev.dev, dr, NULL, NULL) != NULL;
+}
+
+static struct macio_devres * find_macio_dr(struct macio_dev *dev)
+{
+	return devres_find(&dev->ofdev.dev, maciom_release, NULL, NULL);
+}
+
+/**
+ *	macio_request_resource - Request an MMIO resource
+ * 	@dev: pointer to the device holding the resource
+ *	@resource_no: resource number to request
+ *	@name: resource name
+ *
+ *	Mark  memory region number @resource_no associated with MacIO
+ *	device @dev as being reserved by owner @name.  Do not access
+ *	any address inside the memory regions unless this call returns
+ *	successfully.
+ *
+ *	Returns 0 on success, or %EBUSY on error.  A warning
+ *	message is also printed on failure.
+ */
+int macio_request_resource(struct macio_dev *dev, int resource_no,
+			   const char *name)
+{
+	struct macio_devres *dr = find_macio_dr(dev);
+
+	if (macio_resource_len(dev, resource_no) == 0)
+		return 0;
+		
+	if (!request_mem_region(macio_resource_start(dev, resource_no),
+				macio_resource_len(dev, resource_no),
+				name))
+		goto err_out;
+
+	if (dr && resource_no < 32)
+		dr->res_mask |= 1 << resource_no;
+	
+	return 0;
+
+err_out:
+	printk (KERN_WARNING "MacIO: Unable to reserve resource #%d:%lx@%lx"
+		" for device %s\n",
+		resource_no,
+		macio_resource_len(dev, resource_no),
+		macio_resource_start(dev, resource_no),
+		dev_name(&dev->ofdev.dev));
+	return -EBUSY;
+}
+
+/**
+ * macio_release_resource - Release an MMIO resource
+ * @dev: pointer to the device holding the resource
+ * @resource_no: resource number to release
+ */
+void macio_release_resource(struct macio_dev *dev, int resource_no)
+{
+	struct macio_devres *dr = find_macio_dr(dev);
+
+	if (macio_resource_len(dev, resource_no) == 0)
+		return;
+	release_mem_region(macio_resource_start(dev, resource_no),
+			   macio_resource_len(dev, resource_no));
+	if (dr && resource_no < 32)
+		dr->res_mask &= ~(1 << resource_no);
+}
+
+/**
+ *	macio_request_resources - Reserve all memory resources
+ *	@dev: MacIO device whose resources are to be reserved
+ *	@name: Name to be associated with resource.
+ *
+ *	Mark all memory regions associated with MacIO device @dev as
+ *	being reserved by owner @name.  Do not access any address inside
+ *	the memory regions unless this call returns successfully.
+ *
+ *	Returns 0 on success, or %EBUSY on error.  A warning
+ *	message is also printed on failure.
+ */
+int macio_request_resources(struct macio_dev *dev, const char *name)
+{
+	int i;
+	
+	for (i = 0; i < dev->n_resources; i++)
+		if (macio_request_resource(dev, i, name))
+			goto err_out;
+	return 0;
+
+err_out:
+	while(--i >= 0)
+		macio_release_resource(dev, i);
+		
+	return -EBUSY;
+}
+
+/**
+ *	macio_release_resources - Release reserved memory resources
+ *	@dev: MacIO device whose resources were previously reserved
+ */
+
+void macio_release_resources(struct macio_dev *dev)
+{
+	int i;
+	
+	for (i = 0; i < dev->n_resources; i++)
+		macio_release_resource(dev, i);
+}
+
+
+#ifdef CONFIG_PCI
+
+static int macio_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+	struct device_node* np;
+	struct macio_chip* chip;
+	
+	if (ent->vendor != PCI_VENDOR_ID_APPLE)
+		return -ENODEV;
+
+	/* Note regarding refcounting: We assume pci_device_to_OF_node() is
+	 * ported to new OF APIs and returns a node with refcount incremented.
+	 */
+	np = pci_device_to_OF_node(pdev);
+	if (np == NULL)
+		return -ENODEV;
+
+	/* The above assumption is wrong !!!
+	 * fix that here for now until I fix the arch code
+	 */
+	of_node_get(np);
+
+	/* We also assume that pmac_feature will have done a get() on nodes
+	 * stored in the macio chips array
+	 */
+	chip = macio_find(np, macio_unknown);
+       	of_node_put(np);
+	if (chip == NULL)
+		return -ENODEV;
+
+	/* XXX Need locking ??? */
+	if (chip->lbus.pdev == NULL) {
+		chip->lbus.pdev = pdev;
+		chip->lbus.chip = chip;
+		pci_set_drvdata(pdev, &chip->lbus);
+		pci_set_master(pdev);
+	}
+
+	printk(KERN_INFO "MacIO PCI driver attached to %s chipset\n",
+		chip->name);
+
+	/*
+	 * HACK ALERT: The WallStreet PowerBook and some OHare based machines
+	 * have 2 macio ASICs. I must probe the "main" one first or IDE
+	 * ordering will be incorrect. So I put on "hold" the second one since
+	 * it seem to appear first on PCI
+	 */
+	if (chip->type == macio_gatwick || chip->type == macio_ohareII)
+		if (macio_chips[0].lbus.pdev == NULL) {
+			macio_on_hold = chip;
+			return 0;
+		}
+
+	macio_pci_add_devices(chip);
+	if (macio_on_hold && macio_chips[0].lbus.pdev != NULL) {
+		macio_pci_add_devices(macio_on_hold);
+		macio_on_hold = NULL;
+	}
+
+	return 0;
+}
+
+static void macio_pci_remove(struct pci_dev* pdev)
+{
+	panic("removing of macio-asic not supported !\n");
+}
+
+/*
+ * MacIO is matched against any Apple ID, it's probe() function
+ * will then decide wether it applies or not
+ */
+static const struct pci_device_id pci_ids[] = { {
+	.vendor		= PCI_VENDOR_ID_APPLE,
+	.device		= PCI_ANY_ID,
+	.subvendor	= PCI_ANY_ID,
+	.subdevice	= PCI_ANY_ID,
+
+	}, { /* end: all zeroes */ }
+};
+MODULE_DEVICE_TABLE (pci, pci_ids);
+
+/* pci driver glue; this is a "new style" PCI driver module */
+static struct pci_driver macio_pci_driver = {
+	.name		= "macio",
+	.id_table	= pci_ids,
+
+	.probe		= macio_pci_probe,
+	.remove		= macio_pci_remove,
+};
+
+#endif /* CONFIG_PCI */
+
+static int __init macio_module_init (void) 
+{
+#ifdef CONFIG_PCI
+	int rc;
+
+	rc = pci_register_driver(&macio_pci_driver);
+	if (rc)
+		return rc;
+#endif /* CONFIG_PCI */
+	return 0;
+}
+
+module_init(macio_module_init);
+
+EXPORT_SYMBOL(macio_register_driver);
+EXPORT_SYMBOL(macio_unregister_driver);
+EXPORT_SYMBOL(macio_dev_get);
+EXPORT_SYMBOL(macio_dev_put);
+EXPORT_SYMBOL(macio_request_resource);
+EXPORT_SYMBOL(macio_release_resource);
+EXPORT_SYMBOL(macio_request_resources);
+EXPORT_SYMBOL(macio_release_resources);
+EXPORT_SYMBOL(macio_enable_devres);
+