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/arch/powerpc/platforms/ps3/system-bus.c b/arch/powerpc/platforms/ps3/system-bus.c
new file mode 100644
index 000000000..38a7e0229
--- /dev/null
+++ b/arch/powerpc/platforms/ps3/system-bus.c
@@ -0,0 +1,803 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ *  PS3 system bus driver.
+ *
+ *  Copyright (C) 2006 Sony Computer Entertainment Inc.
+ *  Copyright 2006 Sony Corp.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/export.h>
+#include <linux/dma-map-ops.h>
+#include <linux/err.h>
+#include <linux/slab.h>
+
+#include <asm/udbg.h>
+#include <asm/lv1call.h>
+#include <asm/firmware.h>
+#include <asm/cell-regs.h>
+
+#include "platform.h"
+
+static struct device ps3_system_bus = {
+	.init_name = "ps3_system",
+};
+
+/* FIXME: need device usage counters! */
+static struct {
+	struct mutex mutex;
+	int sb_11; /* usb 0 */
+	int sb_12; /* usb 0 */
+	int gpu;
+} usage_hack;
+
+static int ps3_is_device(struct ps3_system_bus_device *dev, u64 bus_id,
+			 u64 dev_id)
+{
+	return dev->bus_id == bus_id && dev->dev_id == dev_id;
+}
+
+static int ps3_open_hv_device_sb(struct ps3_system_bus_device *dev)
+{
+	int result;
+
+	BUG_ON(!dev->bus_id);
+	mutex_lock(&usage_hack.mutex);
+
+	if (ps3_is_device(dev, 1, 1)) {
+		usage_hack.sb_11++;
+		if (usage_hack.sb_11 > 1) {
+			result = 0;
+			goto done;
+		}
+	}
+
+	if (ps3_is_device(dev, 1, 2)) {
+		usage_hack.sb_12++;
+		if (usage_hack.sb_12 > 1) {
+			result = 0;
+			goto done;
+		}
+	}
+
+	result = lv1_open_device(dev->bus_id, dev->dev_id, 0);
+
+	if (result) {
+		pr_warn("%s:%d: lv1_open_device dev=%u.%u(%s) failed: %s\n",
+			__func__, __LINE__, dev->match_id, dev->match_sub_id,
+			dev_name(&dev->core), ps3_result(result));
+		result = -EPERM;
+	}
+
+done:
+	mutex_unlock(&usage_hack.mutex);
+	return result;
+}
+
+static int ps3_close_hv_device_sb(struct ps3_system_bus_device *dev)
+{
+	int result;
+
+	BUG_ON(!dev->bus_id);
+	mutex_lock(&usage_hack.mutex);
+
+	if (ps3_is_device(dev, 1, 1)) {
+		usage_hack.sb_11--;
+		if (usage_hack.sb_11) {
+			result = 0;
+			goto done;
+		}
+	}
+
+	if (ps3_is_device(dev, 1, 2)) {
+		usage_hack.sb_12--;
+		if (usage_hack.sb_12) {
+			result = 0;
+			goto done;
+		}
+	}
+
+	result = lv1_close_device(dev->bus_id, dev->dev_id);
+	BUG_ON(result);
+
+done:
+	mutex_unlock(&usage_hack.mutex);
+	return result;
+}
+
+static int ps3_open_hv_device_gpu(struct ps3_system_bus_device *dev)
+{
+	int result;
+
+	mutex_lock(&usage_hack.mutex);
+
+	usage_hack.gpu++;
+	if (usage_hack.gpu > 1) {
+		result = 0;
+		goto done;
+	}
+
+	result = lv1_gpu_open(0);
+
+	if (result) {
+		pr_warn("%s:%d: lv1_gpu_open failed: %s\n", __func__,
+			__LINE__, ps3_result(result));
+			result = -EPERM;
+	}
+
+done:
+	mutex_unlock(&usage_hack.mutex);
+	return result;
+}
+
+static int ps3_close_hv_device_gpu(struct ps3_system_bus_device *dev)
+{
+	int result;
+
+	mutex_lock(&usage_hack.mutex);
+
+	usage_hack.gpu--;
+	if (usage_hack.gpu) {
+		result = 0;
+		goto done;
+	}
+
+	result = lv1_gpu_close();
+	BUG_ON(result);
+
+done:
+	mutex_unlock(&usage_hack.mutex);
+	return result;
+}
+
+int ps3_open_hv_device(struct ps3_system_bus_device *dev)
+{
+	BUG_ON(!dev);
+	pr_debug("%s:%d: match_id: %u\n", __func__, __LINE__, dev->match_id);
+
+	switch (dev->match_id) {
+	case PS3_MATCH_ID_EHCI:
+	case PS3_MATCH_ID_OHCI:
+	case PS3_MATCH_ID_GELIC:
+	case PS3_MATCH_ID_STOR_DISK:
+	case PS3_MATCH_ID_STOR_ROM:
+	case PS3_MATCH_ID_STOR_FLASH:
+		return ps3_open_hv_device_sb(dev);
+
+	case PS3_MATCH_ID_SOUND:
+	case PS3_MATCH_ID_GPU:
+		return ps3_open_hv_device_gpu(dev);
+
+	case PS3_MATCH_ID_AV_SETTINGS:
+	case PS3_MATCH_ID_SYSTEM_MANAGER:
+		pr_debug("%s:%d: unsupported match_id: %u\n", __func__,
+			__LINE__, dev->match_id);
+		pr_debug("%s:%d: bus_id: %llu\n", __func__, __LINE__,
+			dev->bus_id);
+		BUG();
+		return -EINVAL;
+
+	default:
+		break;
+	}
+
+	pr_debug("%s:%d: unknown match_id: %u\n", __func__, __LINE__,
+		dev->match_id);
+	BUG();
+	return -ENODEV;
+}
+EXPORT_SYMBOL_GPL(ps3_open_hv_device);
+
+int ps3_close_hv_device(struct ps3_system_bus_device *dev)
+{
+	BUG_ON(!dev);
+	pr_debug("%s:%d: match_id: %u\n", __func__, __LINE__, dev->match_id);
+
+	switch (dev->match_id) {
+	case PS3_MATCH_ID_EHCI:
+	case PS3_MATCH_ID_OHCI:
+	case PS3_MATCH_ID_GELIC:
+	case PS3_MATCH_ID_STOR_DISK:
+	case PS3_MATCH_ID_STOR_ROM:
+	case PS3_MATCH_ID_STOR_FLASH:
+		return ps3_close_hv_device_sb(dev);
+
+	case PS3_MATCH_ID_SOUND:
+	case PS3_MATCH_ID_GPU:
+		return ps3_close_hv_device_gpu(dev);
+
+	case PS3_MATCH_ID_AV_SETTINGS:
+	case PS3_MATCH_ID_SYSTEM_MANAGER:
+		pr_debug("%s:%d: unsupported match_id: %u\n", __func__,
+			__LINE__, dev->match_id);
+		pr_debug("%s:%d: bus_id: %llu\n", __func__, __LINE__,
+			dev->bus_id);
+		BUG();
+		return -EINVAL;
+
+	default:
+		break;
+	}
+
+	pr_debug("%s:%d: unknown match_id: %u\n", __func__, __LINE__,
+		dev->match_id);
+	BUG();
+	return -ENODEV;
+}
+EXPORT_SYMBOL_GPL(ps3_close_hv_device);
+
+#define dump_mmio_region(_a) _dump_mmio_region(_a, __func__, __LINE__)
+static void _dump_mmio_region(const struct ps3_mmio_region* r,
+	const char* func, int line)
+{
+	pr_debug("%s:%d: dev       %llu:%llu\n", func, line, r->dev->bus_id,
+		r->dev->dev_id);
+	pr_debug("%s:%d: bus_addr  %lxh\n", func, line, r->bus_addr);
+	pr_debug("%s:%d: len       %lxh\n", func, line, r->len);
+	pr_debug("%s:%d: lpar_addr %lxh\n", func, line, r->lpar_addr);
+}
+
+static int ps3_sb_mmio_region_create(struct ps3_mmio_region *r)
+{
+	int result;
+	u64 lpar_addr;
+
+	result = lv1_map_device_mmio_region(r->dev->bus_id, r->dev->dev_id,
+		r->bus_addr, r->len, r->page_size, &lpar_addr);
+	r->lpar_addr = lpar_addr;
+
+	if (result) {
+		pr_debug("%s:%d: lv1_map_device_mmio_region failed: %s\n",
+			__func__, __LINE__, ps3_result(result));
+		r->lpar_addr = 0;
+	}
+
+	dump_mmio_region(r);
+	return result;
+}
+
+static int ps3_ioc0_mmio_region_create(struct ps3_mmio_region *r)
+{
+	/* device specific; do nothing currently */
+	return 0;
+}
+
+int ps3_mmio_region_create(struct ps3_mmio_region *r)
+{
+	return r->mmio_ops->create(r);
+}
+EXPORT_SYMBOL_GPL(ps3_mmio_region_create);
+
+static int ps3_sb_free_mmio_region(struct ps3_mmio_region *r)
+{
+	int result;
+
+	dump_mmio_region(r);
+	result = lv1_unmap_device_mmio_region(r->dev->bus_id, r->dev->dev_id,
+		r->lpar_addr);
+
+	if (result)
+		pr_debug("%s:%d: lv1_unmap_device_mmio_region failed: %s\n",
+			__func__, __LINE__, ps3_result(result));
+
+	r->lpar_addr = 0;
+	return result;
+}
+
+static int ps3_ioc0_free_mmio_region(struct ps3_mmio_region *r)
+{
+	/* device specific; do nothing currently */
+	return 0;
+}
+
+
+int ps3_free_mmio_region(struct ps3_mmio_region *r)
+{
+	return r->mmio_ops->free(r);
+}
+
+EXPORT_SYMBOL_GPL(ps3_free_mmio_region);
+
+static const struct ps3_mmio_region_ops ps3_mmio_sb_region_ops = {
+	.create = ps3_sb_mmio_region_create,
+	.free = ps3_sb_free_mmio_region
+};
+
+static const struct ps3_mmio_region_ops ps3_mmio_ioc0_region_ops = {
+	.create = ps3_ioc0_mmio_region_create,
+	.free = ps3_ioc0_free_mmio_region
+};
+
+int ps3_mmio_region_init(struct ps3_system_bus_device *dev,
+	struct ps3_mmio_region *r, unsigned long bus_addr, unsigned long len,
+	enum ps3_mmio_page_size page_size)
+{
+	r->dev = dev;
+	r->bus_addr = bus_addr;
+	r->len = len;
+	r->page_size = page_size;
+	switch (dev->dev_type) {
+	case PS3_DEVICE_TYPE_SB:
+		r->mmio_ops = &ps3_mmio_sb_region_ops;
+		break;
+	case PS3_DEVICE_TYPE_IOC0:
+		r->mmio_ops = &ps3_mmio_ioc0_region_ops;
+		break;
+	default:
+		BUG();
+		return -EINVAL;
+	}
+	return 0;
+}
+EXPORT_SYMBOL_GPL(ps3_mmio_region_init);
+
+static int ps3_system_bus_match(struct device *_dev,
+	struct device_driver *_drv)
+{
+	int result;
+	struct ps3_system_bus_driver *drv = ps3_drv_to_system_bus_drv(_drv);
+	struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
+
+	if (!dev->match_sub_id)
+		result = dev->match_id == drv->match_id;
+	else
+		result = dev->match_sub_id == drv->match_sub_id &&
+			dev->match_id == drv->match_id;
+
+	if (result)
+		pr_info("%s:%d: dev=%u.%u(%s), drv=%u.%u(%s): match\n",
+			__func__, __LINE__,
+			dev->match_id, dev->match_sub_id, dev_name(&dev->core),
+			drv->match_id, drv->match_sub_id, drv->core.name);
+	else
+		pr_debug("%s:%d: dev=%u.%u(%s), drv=%u.%u(%s): miss\n",
+			__func__, __LINE__,
+			dev->match_id, dev->match_sub_id, dev_name(&dev->core),
+			drv->match_id, drv->match_sub_id, drv->core.name);
+
+	return result;
+}
+
+static int ps3_system_bus_probe(struct device *_dev)
+{
+	int result = 0;
+	struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
+	struct ps3_system_bus_driver *drv;
+
+	BUG_ON(!dev);
+	dev_dbg(_dev, "%s:%d\n", __func__, __LINE__);
+
+	drv = ps3_system_bus_dev_to_system_bus_drv(dev);
+	BUG_ON(!drv);
+
+	if (drv->probe)
+		result = drv->probe(dev);
+	else
+		pr_debug("%s:%d: %s no probe method\n", __func__, __LINE__,
+			dev_name(&dev->core));
+
+	pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, dev_name(&dev->core));
+	return result;
+}
+
+static void ps3_system_bus_remove(struct device *_dev)
+{
+	struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
+	struct ps3_system_bus_driver *drv;
+
+	BUG_ON(!dev);
+	dev_dbg(_dev, "%s:%d\n", __func__, __LINE__);
+
+	drv = ps3_system_bus_dev_to_system_bus_drv(dev);
+	BUG_ON(!drv);
+
+	if (drv->remove)
+		drv->remove(dev);
+	else
+		dev_dbg(&dev->core, "%s:%d %s: no remove method\n",
+			__func__, __LINE__, drv->core.name);
+
+	pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, dev_name(&dev->core));
+}
+
+static void ps3_system_bus_shutdown(struct device *_dev)
+{
+	struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
+	struct ps3_system_bus_driver *drv;
+
+	BUG_ON(!dev);
+
+	dev_dbg(&dev->core, " -> %s:%d: match_id %d\n", __func__, __LINE__,
+		dev->match_id);
+
+	if (!dev->core.driver) {
+		dev_dbg(&dev->core, "%s:%d: no driver bound\n", __func__,
+			__LINE__);
+		return;
+	}
+
+	drv = ps3_system_bus_dev_to_system_bus_drv(dev);
+
+	BUG_ON(!drv);
+
+	dev_dbg(&dev->core, "%s:%d: %s -> %s\n", __func__, __LINE__,
+		dev_name(&dev->core), drv->core.name);
+
+	if (drv->shutdown)
+		drv->shutdown(dev);
+	else if (drv->remove) {
+		dev_dbg(&dev->core, "%s:%d %s: no shutdown, calling remove\n",
+			__func__, __LINE__, drv->core.name);
+		drv->remove(dev);
+	} else {
+		dev_dbg(&dev->core, "%s:%d %s: no shutdown method\n",
+			__func__, __LINE__, drv->core.name);
+		BUG();
+	}
+
+	dev_dbg(&dev->core, " <- %s:%d\n", __func__, __LINE__);
+}
+
+static int ps3_system_bus_uevent(struct device *_dev, struct kobj_uevent_env *env)
+{
+	struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
+
+	if (add_uevent_var(env, "MODALIAS=ps3:%d:%d", dev->match_id,
+			   dev->match_sub_id))
+		return -ENOMEM;
+	return 0;
+}
+
+static ssize_t modalias_show(struct device *_dev, struct device_attribute *a,
+	char *buf)
+{
+	struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
+	int len = snprintf(buf, PAGE_SIZE, "ps3:%d:%d\n", dev->match_id,
+			   dev->match_sub_id);
+
+	return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len;
+}
+static DEVICE_ATTR_RO(modalias);
+
+static struct attribute *ps3_system_bus_dev_attrs[] = {
+	&dev_attr_modalias.attr,
+	NULL,
+};
+ATTRIBUTE_GROUPS(ps3_system_bus_dev);
+
+static struct bus_type ps3_system_bus_type = {
+	.name = "ps3_system_bus",
+	.match = ps3_system_bus_match,
+	.uevent = ps3_system_bus_uevent,
+	.probe = ps3_system_bus_probe,
+	.remove = ps3_system_bus_remove,
+	.shutdown = ps3_system_bus_shutdown,
+	.dev_groups = ps3_system_bus_dev_groups,
+};
+
+static int __init ps3_system_bus_init(void)
+{
+	int result;
+
+	if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
+		return -ENODEV;
+
+	pr_debug(" -> %s:%d\n", __func__, __LINE__);
+
+	mutex_init(&usage_hack.mutex);
+
+	result = device_register(&ps3_system_bus);
+	BUG_ON(result);
+
+	result = bus_register(&ps3_system_bus_type);
+	BUG_ON(result);
+
+	pr_debug(" <- %s:%d\n", __func__, __LINE__);
+	return result;
+}
+
+core_initcall(ps3_system_bus_init);
+
+/* Allocates a contiguous real buffer and creates mappings over it.
+ * Returns the virtual address of the buffer and sets dma_handle
+ * to the dma address (mapping) of the first page.
+ */
+static void * ps3_alloc_coherent(struct device *_dev, size_t size,
+				 dma_addr_t *dma_handle, gfp_t flag,
+				 unsigned long attrs)
+{
+	int result;
+	struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
+	unsigned long virt_addr;
+
+	flag &= ~(__GFP_DMA | __GFP_HIGHMEM);
+	flag |= __GFP_ZERO;
+
+	virt_addr = __get_free_pages(flag, get_order(size));
+
+	if (!virt_addr) {
+		pr_debug("%s:%d: get_free_pages failed\n", __func__, __LINE__);
+		goto clean_none;
+	}
+
+	result = ps3_dma_map(dev->d_region, virt_addr, size, dma_handle,
+			     CBE_IOPTE_PP_W | CBE_IOPTE_PP_R |
+			     CBE_IOPTE_SO_RW | CBE_IOPTE_M);
+
+	if (result) {
+		pr_debug("%s:%d: ps3_dma_map failed (%d)\n",
+			__func__, __LINE__, result);
+		BUG_ON("check region type");
+		goto clean_alloc;
+	}
+
+	return (void*)virt_addr;
+
+clean_alloc:
+	free_pages(virt_addr, get_order(size));
+clean_none:
+	dma_handle = NULL;
+	return NULL;
+}
+
+static void ps3_free_coherent(struct device *_dev, size_t size, void *vaddr,
+			      dma_addr_t dma_handle, unsigned long attrs)
+{
+	struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
+
+	ps3_dma_unmap(dev->d_region, dma_handle, size);
+	free_pages((unsigned long)vaddr, get_order(size));
+}
+
+/* Creates TCEs for a user provided buffer.  The user buffer must be
+ * contiguous real kernel storage (not vmalloc).  The address passed here
+ * comprises a page address and offset into that page. The dma_addr_t
+ * returned will point to the same byte within the page as was passed in.
+ */
+
+static dma_addr_t ps3_sb_map_page(struct device *_dev, struct page *page,
+	unsigned long offset, size_t size, enum dma_data_direction direction,
+	unsigned long attrs)
+{
+	struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
+	int result;
+	dma_addr_t bus_addr;
+	void *ptr = page_address(page) + offset;
+
+	result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size,
+			     &bus_addr,
+			     CBE_IOPTE_PP_R | CBE_IOPTE_PP_W |
+			     CBE_IOPTE_SO_RW | CBE_IOPTE_M);
+
+	if (result) {
+		pr_debug("%s:%d: ps3_dma_map failed (%d)\n",
+			__func__, __LINE__, result);
+	}
+
+	return bus_addr;
+}
+
+static dma_addr_t ps3_ioc0_map_page(struct device *_dev, struct page *page,
+				    unsigned long offset, size_t size,
+				    enum dma_data_direction direction,
+				    unsigned long attrs)
+{
+	struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
+	int result;
+	dma_addr_t bus_addr;
+	u64 iopte_flag;
+	void *ptr = page_address(page) + offset;
+
+	iopte_flag = CBE_IOPTE_M;
+	switch (direction) {
+	case DMA_BIDIRECTIONAL:
+		iopte_flag |= CBE_IOPTE_PP_R | CBE_IOPTE_PP_W | CBE_IOPTE_SO_RW;
+		break;
+	case DMA_TO_DEVICE:
+		iopte_flag |= CBE_IOPTE_PP_R | CBE_IOPTE_SO_R;
+		break;
+	case DMA_FROM_DEVICE:
+		iopte_flag |= CBE_IOPTE_PP_W | CBE_IOPTE_SO_RW;
+		break;
+	default:
+		/* not happened */
+		BUG();
+	}
+	result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size,
+			     &bus_addr, iopte_flag);
+
+	if (result) {
+		pr_debug("%s:%d: ps3_dma_map failed (%d)\n",
+			__func__, __LINE__, result);
+	}
+	return bus_addr;
+}
+
+static void ps3_unmap_page(struct device *_dev, dma_addr_t dma_addr,
+	size_t size, enum dma_data_direction direction, unsigned long attrs)
+{
+	struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
+	int result;
+
+	result = ps3_dma_unmap(dev->d_region, dma_addr, size);
+
+	if (result) {
+		pr_debug("%s:%d: ps3_dma_unmap failed (%d)\n",
+			__func__, __LINE__, result);
+	}
+}
+
+static int ps3_sb_map_sg(struct device *_dev, struct scatterlist *sgl,
+	int nents, enum dma_data_direction direction, unsigned long attrs)
+{
+#if defined(CONFIG_PS3_DYNAMIC_DMA)
+	BUG_ON("do");
+	return -EPERM;
+#else
+	struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
+	struct scatterlist *sg;
+	int i;
+
+	for_each_sg(sgl, sg, nents, i) {
+		int result = ps3_dma_map(dev->d_region, sg_phys(sg),
+					sg->length, &sg->dma_address, 0);
+
+		if (result) {
+			pr_debug("%s:%d: ps3_dma_map failed (%d)\n",
+				__func__, __LINE__, result);
+			return -EINVAL;
+		}
+
+		sg->dma_length = sg->length;
+	}
+
+	return nents;
+#endif
+}
+
+static int ps3_ioc0_map_sg(struct device *_dev, struct scatterlist *sg,
+			   int nents,
+			   enum dma_data_direction direction,
+			   unsigned long attrs)
+{
+	BUG();
+	return -EINVAL;
+}
+
+static void ps3_sb_unmap_sg(struct device *_dev, struct scatterlist *sg,
+	int nents, enum dma_data_direction direction, unsigned long attrs)
+{
+#if defined(CONFIG_PS3_DYNAMIC_DMA)
+	BUG_ON("do");
+#endif
+}
+
+static void ps3_ioc0_unmap_sg(struct device *_dev, struct scatterlist *sg,
+			    int nents, enum dma_data_direction direction,
+			    unsigned long attrs)
+{
+	BUG();
+}
+
+static int ps3_dma_supported(struct device *_dev, u64 mask)
+{
+	return mask >= DMA_BIT_MASK(32);
+}
+
+static const struct dma_map_ops ps3_sb_dma_ops = {
+	.alloc = ps3_alloc_coherent,
+	.free = ps3_free_coherent,
+	.map_sg = ps3_sb_map_sg,
+	.unmap_sg = ps3_sb_unmap_sg,
+	.dma_supported = ps3_dma_supported,
+	.map_page = ps3_sb_map_page,
+	.unmap_page = ps3_unmap_page,
+	.mmap = dma_common_mmap,
+	.get_sgtable = dma_common_get_sgtable,
+	.alloc_pages = dma_common_alloc_pages,
+	.free_pages = dma_common_free_pages,
+};
+
+static const struct dma_map_ops ps3_ioc0_dma_ops = {
+	.alloc = ps3_alloc_coherent,
+	.free = ps3_free_coherent,
+	.map_sg = ps3_ioc0_map_sg,
+	.unmap_sg = ps3_ioc0_unmap_sg,
+	.dma_supported = ps3_dma_supported,
+	.map_page = ps3_ioc0_map_page,
+	.unmap_page = ps3_unmap_page,
+	.mmap = dma_common_mmap,
+	.get_sgtable = dma_common_get_sgtable,
+	.alloc_pages = dma_common_alloc_pages,
+	.free_pages = dma_common_free_pages,
+};
+
+/**
+ * ps3_system_bus_release_device - remove a device from the system bus
+ */
+
+static void ps3_system_bus_release_device(struct device *_dev)
+{
+	struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
+	kfree(dev);
+}
+
+/**
+ * ps3_system_bus_device_register - add a device to the system bus
+ *
+ * ps3_system_bus_device_register() expects the dev object to be allocated
+ * dynamically by the caller.  The system bus takes ownership of the dev
+ * object and frees the object in ps3_system_bus_release_device().
+ */
+
+int ps3_system_bus_device_register(struct ps3_system_bus_device *dev)
+{
+	int result;
+	static unsigned int dev_ioc0_count;
+	static unsigned int dev_sb_count;
+	static unsigned int dev_vuart_count;
+	static unsigned int dev_lpm_count;
+
+	if (!dev->core.parent)
+		dev->core.parent = &ps3_system_bus;
+	dev->core.bus = &ps3_system_bus_type;
+	dev->core.release = ps3_system_bus_release_device;
+
+	switch (dev->dev_type) {
+	case PS3_DEVICE_TYPE_IOC0:
+		dev->core.dma_ops = &ps3_ioc0_dma_ops;
+		dev_set_name(&dev->core, "ioc0_%02x", ++dev_ioc0_count);
+		break;
+	case PS3_DEVICE_TYPE_SB:
+		dev->core.dma_ops = &ps3_sb_dma_ops;
+		dev_set_name(&dev->core, "sb_%02x", ++dev_sb_count);
+
+		break;
+	case PS3_DEVICE_TYPE_VUART:
+		dev_set_name(&dev->core, "vuart_%02x", ++dev_vuart_count);
+		break;
+	case PS3_DEVICE_TYPE_LPM:
+		dev_set_name(&dev->core, "lpm_%02x", ++dev_lpm_count);
+		break;
+	default:
+		BUG();
+	}
+
+	dev->core.of_node = NULL;
+	set_dev_node(&dev->core, 0);
+
+	pr_debug("%s:%d add %s\n", __func__, __LINE__, dev_name(&dev->core));
+
+	result = device_register(&dev->core);
+	return result;
+}
+
+EXPORT_SYMBOL_GPL(ps3_system_bus_device_register);
+
+int ps3_system_bus_driver_register(struct ps3_system_bus_driver *drv)
+{
+	int result;
+
+	pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, drv->core.name);
+
+	if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
+		return -ENODEV;
+
+	drv->core.bus = &ps3_system_bus_type;
+
+	result = driver_register(&drv->core);
+	pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, drv->core.name);
+	return result;
+}
+
+EXPORT_SYMBOL_GPL(ps3_system_bus_driver_register);
+
+void ps3_system_bus_driver_unregister(struct ps3_system_bus_driver *drv)
+{
+	pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, drv->core.name);
+	driver_unregister(&drv->core);
+	pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, drv->core.name);
+}
+
+EXPORT_SYMBOL_GPL(ps3_system_bus_driver_unregister);