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, 1022 insertions, 0 deletions

diff --git a/arch/powerpc/platforms/powermac/pfunc_core.c b/arch/powerpc/platforms/powermac/pfunc_core.c
new file mode 100644
index 000000000..22741ddfd
--- /dev/null
+++ b/arch/powerpc/platforms/powermac/pfunc_core.c
@@ -0,0 +1,1022 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ *
+ * FIXME: Properly make this race free with refcounting etc...
+ *
+ * FIXME: LOCKING !!!
+ */
+
+#include <linux/delay.h>
+#include <linux/kernel.h>
+#include <linux/spinlock.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/of.h>
+
+#include <asm/pmac_pfunc.h>
+
+/* Debug */
+#define LOG_PARSE(fmt...)
+#define LOG_ERROR(fmt...)	printk(fmt)
+#define LOG_BLOB(t,b,c)
+
+#undef DEBUG
+#ifdef DEBUG
+#define DBG(fmt...)		printk(fmt)
+#else
+#define DBG(fmt...)
+#endif
+
+/* Command numbers */
+#define PMF_CMD_LIST			0
+#define PMF_CMD_WRITE_GPIO		1
+#define PMF_CMD_READ_GPIO		2
+#define PMF_CMD_WRITE_REG32		3
+#define PMF_CMD_READ_REG32		4
+#define PMF_CMD_WRITE_REG16		5
+#define PMF_CMD_READ_REG16		6
+#define PMF_CMD_WRITE_REG8		7
+#define PMF_CMD_READ_REG8		8
+#define PMF_CMD_DELAY			9
+#define PMF_CMD_WAIT_REG32		10
+#define PMF_CMD_WAIT_REG16		11
+#define PMF_CMD_WAIT_REG8		12
+#define PMF_CMD_READ_I2C		13
+#define PMF_CMD_WRITE_I2C		14
+#define PMF_CMD_RMW_I2C			15
+#define PMF_CMD_GEN_I2C			16
+#define PMF_CMD_SHIFT_BYTES_RIGHT	17
+#define PMF_CMD_SHIFT_BYTES_LEFT	18
+#define PMF_CMD_READ_CFG		19
+#define PMF_CMD_WRITE_CFG		20
+#define PMF_CMD_RMW_CFG			21
+#define PMF_CMD_READ_I2C_SUBADDR	22
+#define PMF_CMD_WRITE_I2C_SUBADDR	23
+#define PMF_CMD_SET_I2C_MODE		24
+#define PMF_CMD_RMW_I2C_SUBADDR		25
+#define PMF_CMD_READ_REG32_MASK_SHR_XOR	26
+#define PMF_CMD_READ_REG16_MASK_SHR_XOR	27
+#define PMF_CMD_READ_REG8_MASK_SHR_XOR	28
+#define PMF_CMD_WRITE_REG32_SHL_MASK	29
+#define PMF_CMD_WRITE_REG16_SHL_MASK	30
+#define PMF_CMD_WRITE_REG8_SHL_MASK	31
+#define PMF_CMD_MASK_AND_COMPARE	32
+#define PMF_CMD_COUNT			33
+
+/* This structure holds the state of the parser while walking through
+ * a function definition
+ */
+struct pmf_cmd {
+	const void		*cmdptr;
+	const void		*cmdend;
+	struct pmf_function	*func;
+	void			*instdata;
+	struct pmf_args		*args;
+	int			error;
+};
+
+#if 0
+/* Debug output */
+static void print_blob(const char *title, const void *blob, int bytes)
+{
+	printk("%s", title);
+	while(bytes--) {
+		printk("%02x ", *((u8 *)blob));
+		blob += 1;
+	}
+	printk("\n");
+}
+#endif
+
+/*
+ * Parser helpers
+ */
+
+static u32 pmf_next32(struct pmf_cmd *cmd)
+{
+	u32 value;
+	if ((cmd->cmdend - cmd->cmdptr) < 4) {
+		cmd->error = 1;
+		return 0;
+	}
+	value = *((u32 *)cmd->cmdptr);
+	cmd->cmdptr += 4;
+	return value;
+}
+
+static const void* pmf_next_blob(struct pmf_cmd *cmd, int count)
+{
+	const void *value;
+	if ((cmd->cmdend - cmd->cmdptr) < count) {
+		cmd->error = 1;
+		return NULL;
+	}
+	value = cmd->cmdptr;
+	cmd->cmdptr += count;
+	return value;
+}
+
+/*
+ * Individual command parsers
+ */
+
+#define PMF_PARSE_CALL(name, cmd, handlers, p...) \
+	do { \
+		if (cmd->error) \
+			return -ENXIO; \
+		if (handlers == NULL) \
+			return 0; \
+		if (handlers->name)				      \
+			return handlers->name(cmd->func, cmd->instdata, \
+					      cmd->args, p);	      \
+		return -1; \
+	} while(0) \
+
+
+static int pmf_parser_write_gpio(struct pmf_cmd *cmd, struct pmf_handlers *h)
+{
+	u8 value = (u8)pmf_next32(cmd);
+	u8 mask = (u8)pmf_next32(cmd);
+
+	LOG_PARSE("pmf: write_gpio(value: %02x, mask: %02x)\n", value, mask);
+
+	PMF_PARSE_CALL(write_gpio, cmd, h, value, mask);
+}
+
+static int pmf_parser_read_gpio(struct pmf_cmd *cmd, struct pmf_handlers *h)
+{
+	u8 mask = (u8)pmf_next32(cmd);
+	int rshift = (int)pmf_next32(cmd);
+	u8 xor = (u8)pmf_next32(cmd);
+
+	LOG_PARSE("pmf: read_gpio(mask: %02x, rshift: %d, xor: %02x)\n",
+		  mask, rshift, xor);
+
+	PMF_PARSE_CALL(read_gpio, cmd, h, mask, rshift, xor);
+}
+
+static int pmf_parser_write_reg32(struct pmf_cmd *cmd, struct pmf_handlers *h)
+{
+	u32 offset = pmf_next32(cmd);
+	u32 value = pmf_next32(cmd);
+	u32 mask = pmf_next32(cmd);
+
+	LOG_PARSE("pmf: write_reg32(offset: %08x, value: %08x, mask: %08x)\n",
+		  offset, value, mask);
+
+	PMF_PARSE_CALL(write_reg32, cmd, h, offset, value, mask);
+}
+
+static int pmf_parser_read_reg32(struct pmf_cmd *cmd, struct pmf_handlers *h)
+{
+	u32 offset = pmf_next32(cmd);
+
+	LOG_PARSE("pmf: read_reg32(offset: %08x)\n", offset);
+
+	PMF_PARSE_CALL(read_reg32, cmd, h, offset);
+}
+
+
+static int pmf_parser_write_reg16(struct pmf_cmd *cmd, struct pmf_handlers *h)
+{
+	u32 offset = pmf_next32(cmd);
+	u16 value = (u16)pmf_next32(cmd);
+	u16 mask = (u16)pmf_next32(cmd);
+
+	LOG_PARSE("pmf: write_reg16(offset: %08x, value: %04x, mask: %04x)\n",
+		  offset, value, mask);
+
+	PMF_PARSE_CALL(write_reg16, cmd, h, offset, value, mask);
+}
+
+static int pmf_parser_read_reg16(struct pmf_cmd *cmd, struct pmf_handlers *h)
+{
+	u32 offset = pmf_next32(cmd);
+
+	LOG_PARSE("pmf: read_reg16(offset: %08x)\n", offset);
+
+	PMF_PARSE_CALL(read_reg16, cmd, h, offset);
+}
+
+
+static int pmf_parser_write_reg8(struct pmf_cmd *cmd, struct pmf_handlers *h)
+{
+	u32 offset = pmf_next32(cmd);
+	u8 value = (u16)pmf_next32(cmd);
+	u8 mask = (u16)pmf_next32(cmd);
+
+	LOG_PARSE("pmf: write_reg8(offset: %08x, value: %02x, mask: %02x)\n",
+		  offset, value, mask);
+
+	PMF_PARSE_CALL(write_reg8, cmd, h, offset, value, mask);
+}
+
+static int pmf_parser_read_reg8(struct pmf_cmd *cmd, struct pmf_handlers *h)
+{
+	u32 offset = pmf_next32(cmd);
+
+	LOG_PARSE("pmf: read_reg8(offset: %08x)\n", offset);
+
+	PMF_PARSE_CALL(read_reg8, cmd, h, offset);
+}
+
+static int pmf_parser_delay(struct pmf_cmd *cmd, struct pmf_handlers *h)
+{
+	u32 duration = pmf_next32(cmd);
+
+	LOG_PARSE("pmf: delay(duration: %d us)\n", duration);
+
+	PMF_PARSE_CALL(delay, cmd, h, duration);
+}
+
+static int pmf_parser_wait_reg32(struct pmf_cmd *cmd, struct pmf_handlers *h)
+{
+	u32 offset = pmf_next32(cmd);
+	u32 value = pmf_next32(cmd);
+	u32 mask = pmf_next32(cmd);
+
+	LOG_PARSE("pmf: wait_reg32(offset: %08x, comp_value: %08x,mask: %08x)\n",
+		  offset, value, mask);
+
+	PMF_PARSE_CALL(wait_reg32, cmd, h, offset, value, mask);
+}
+
+static int pmf_parser_wait_reg16(struct pmf_cmd *cmd, struct pmf_handlers *h)
+{
+	u32 offset = pmf_next32(cmd);
+	u16 value = (u16)pmf_next32(cmd);
+	u16 mask = (u16)pmf_next32(cmd);
+
+	LOG_PARSE("pmf: wait_reg16(offset: %08x, comp_value: %04x,mask: %04x)\n",
+		  offset, value, mask);
+
+	PMF_PARSE_CALL(wait_reg16, cmd, h, offset, value, mask);
+}
+
+static int pmf_parser_wait_reg8(struct pmf_cmd *cmd, struct pmf_handlers *h)
+{
+	u32 offset = pmf_next32(cmd);
+	u8 value = (u8)pmf_next32(cmd);
+	u8 mask = (u8)pmf_next32(cmd);
+
+	LOG_PARSE("pmf: wait_reg8(offset: %08x, comp_value: %02x,mask: %02x)\n",
+		  offset, value, mask);
+
+	PMF_PARSE_CALL(wait_reg8, cmd, h, offset, value, mask);
+}
+
+static int pmf_parser_read_i2c(struct pmf_cmd *cmd, struct pmf_handlers *h)
+{
+	u32 bytes = pmf_next32(cmd);
+
+	LOG_PARSE("pmf: read_i2c(bytes: %ud)\n", bytes);
+
+	PMF_PARSE_CALL(read_i2c, cmd, h, bytes);
+}
+
+static int pmf_parser_write_i2c(struct pmf_cmd *cmd, struct pmf_handlers *h)
+{
+	u32 bytes = pmf_next32(cmd);
+	const void *blob = pmf_next_blob(cmd, bytes);
+
+	LOG_PARSE("pmf: write_i2c(bytes: %ud) ...\n", bytes);
+	LOG_BLOB("pmf:   data: \n", blob, bytes);
+
+	PMF_PARSE_CALL(write_i2c, cmd, h, bytes, blob);
+}
+
+
+static int pmf_parser_rmw_i2c(struct pmf_cmd *cmd, struct pmf_handlers *h)
+{
+	u32 maskbytes = pmf_next32(cmd);
+	u32 valuesbytes = pmf_next32(cmd);
+	u32 totalbytes = pmf_next32(cmd);
+	const void *maskblob = pmf_next_blob(cmd, maskbytes);
+	const void *valuesblob = pmf_next_blob(cmd, valuesbytes);
+
+	LOG_PARSE("pmf: rmw_i2c(maskbytes: %ud, valuebytes: %ud, "
+		  "totalbytes: %d) ...\n",
+		  maskbytes, valuesbytes, totalbytes);
+	LOG_BLOB("pmf:   mask data: \n", maskblob, maskbytes);
+	LOG_BLOB("pmf:   values data: \n", valuesblob, valuesbytes);
+
+	PMF_PARSE_CALL(rmw_i2c, cmd, h, maskbytes, valuesbytes, totalbytes,
+		       maskblob, valuesblob);
+}
+
+static int pmf_parser_read_cfg(struct pmf_cmd *cmd, struct pmf_handlers *h)
+{
+	u32 offset = pmf_next32(cmd);
+	u32 bytes = pmf_next32(cmd);
+
+	LOG_PARSE("pmf: read_cfg(offset: %x, bytes: %ud)\n", offset, bytes);
+
+	PMF_PARSE_CALL(read_cfg, cmd, h, offset, bytes);
+}
+
+
+static int pmf_parser_write_cfg(struct pmf_cmd *cmd, struct pmf_handlers *h)
+{
+	u32 offset = pmf_next32(cmd);
+	u32 bytes = pmf_next32(cmd);
+	const void *blob = pmf_next_blob(cmd, bytes);
+
+	LOG_PARSE("pmf: write_cfg(offset: %x, bytes: %ud)\n", offset, bytes);
+	LOG_BLOB("pmf:   data: \n", blob, bytes);
+
+	PMF_PARSE_CALL(write_cfg, cmd, h, offset, bytes, blob);
+}
+
+static int pmf_parser_rmw_cfg(struct pmf_cmd *cmd, struct pmf_handlers *h)
+{
+	u32 offset = pmf_next32(cmd);
+	u32 maskbytes = pmf_next32(cmd);
+	u32 valuesbytes = pmf_next32(cmd);
+	u32 totalbytes = pmf_next32(cmd);
+	const void *maskblob = pmf_next_blob(cmd, maskbytes);
+	const void *valuesblob = pmf_next_blob(cmd, valuesbytes);
+
+	LOG_PARSE("pmf: rmw_cfg(maskbytes: %ud, valuebytes: %ud,"
+		  " totalbytes: %d) ...\n",
+		  maskbytes, valuesbytes, totalbytes);
+	LOG_BLOB("pmf:   mask data: \n", maskblob, maskbytes);
+	LOG_BLOB("pmf:   values data: \n", valuesblob, valuesbytes);
+
+	PMF_PARSE_CALL(rmw_cfg, cmd, h, offset, maskbytes, valuesbytes,
+		       totalbytes, maskblob, valuesblob);
+}
+
+
+static int pmf_parser_read_i2c_sub(struct pmf_cmd *cmd, struct pmf_handlers *h)
+{
+	u8 subaddr = (u8)pmf_next32(cmd);
+	u32 bytes = pmf_next32(cmd);
+
+	LOG_PARSE("pmf: read_i2c_sub(subaddr: %x, bytes: %ud)\n",
+		  subaddr, bytes);
+
+	PMF_PARSE_CALL(read_i2c_sub, cmd, h, subaddr, bytes);
+}
+
+static int pmf_parser_write_i2c_sub(struct pmf_cmd *cmd, struct pmf_handlers *h)
+{
+	u8 subaddr = (u8)pmf_next32(cmd);
+	u32 bytes = pmf_next32(cmd);
+	const void *blob = pmf_next_blob(cmd, bytes);
+
+	LOG_PARSE("pmf: write_i2c_sub(subaddr: %x, bytes: %ud) ...\n",
+		  subaddr, bytes);
+	LOG_BLOB("pmf:   data: \n", blob, bytes);
+
+	PMF_PARSE_CALL(write_i2c_sub, cmd, h, subaddr, bytes, blob);
+}
+
+static int pmf_parser_set_i2c_mode(struct pmf_cmd *cmd, struct pmf_handlers *h)
+{
+	u32 mode = pmf_next32(cmd);
+
+	LOG_PARSE("pmf: set_i2c_mode(mode: %d)\n", mode);
+
+	PMF_PARSE_CALL(set_i2c_mode, cmd, h, mode);
+}
+
+
+static int pmf_parser_rmw_i2c_sub(struct pmf_cmd *cmd, struct pmf_handlers *h)
+{
+	u8 subaddr = (u8)pmf_next32(cmd);
+	u32 maskbytes = pmf_next32(cmd);
+	u32 valuesbytes = pmf_next32(cmd);
+	u32 totalbytes = pmf_next32(cmd);
+	const void *maskblob = pmf_next_blob(cmd, maskbytes);
+	const void *valuesblob = pmf_next_blob(cmd, valuesbytes);
+
+	LOG_PARSE("pmf: rmw_i2c_sub(subaddr: %x, maskbytes: %ud, valuebytes: %ud"
+		  ", totalbytes: %d) ...\n",
+		  subaddr, maskbytes, valuesbytes, totalbytes);
+	LOG_BLOB("pmf:   mask data: \n", maskblob, maskbytes);
+	LOG_BLOB("pmf:   values data: \n", valuesblob, valuesbytes);
+
+	PMF_PARSE_CALL(rmw_i2c_sub, cmd, h, subaddr, maskbytes, valuesbytes,
+		       totalbytes, maskblob, valuesblob);
+}
+
+static int pmf_parser_read_reg32_msrx(struct pmf_cmd *cmd,
+				      struct pmf_handlers *h)
+{
+	u32 offset = pmf_next32(cmd);
+	u32 mask = pmf_next32(cmd);
+	u32 shift = pmf_next32(cmd);
+	u32 xor = pmf_next32(cmd);
+
+	LOG_PARSE("pmf: read_reg32_msrx(offset: %x, mask: %x, shift: %x,"
+		  " xor: %x\n", offset, mask, shift, xor);
+
+	PMF_PARSE_CALL(read_reg32_msrx, cmd, h, offset, mask, shift, xor);
+}
+
+static int pmf_parser_read_reg16_msrx(struct pmf_cmd *cmd,
+				      struct pmf_handlers *h)
+{
+	u32 offset = pmf_next32(cmd);
+	u32 mask = pmf_next32(cmd);
+	u32 shift = pmf_next32(cmd);
+	u32 xor = pmf_next32(cmd);
+
+	LOG_PARSE("pmf: read_reg16_msrx(offset: %x, mask: %x, shift: %x,"
+		  " xor: %x\n", offset, mask, shift, xor);
+
+	PMF_PARSE_CALL(read_reg16_msrx, cmd, h, offset, mask, shift, xor);
+}
+static int pmf_parser_read_reg8_msrx(struct pmf_cmd *cmd,
+				     struct pmf_handlers *h)
+{
+	u32 offset = pmf_next32(cmd);
+	u32 mask = pmf_next32(cmd);
+	u32 shift = pmf_next32(cmd);
+	u32 xor = pmf_next32(cmd);
+
+	LOG_PARSE("pmf: read_reg8_msrx(offset: %x, mask: %x, shift: %x,"
+		  " xor: %x\n", offset, mask, shift, xor);
+
+	PMF_PARSE_CALL(read_reg8_msrx, cmd, h, offset, mask, shift, xor);
+}
+
+static int pmf_parser_write_reg32_slm(struct pmf_cmd *cmd,
+				      struct pmf_handlers *h)
+{
+	u32 offset = pmf_next32(cmd);
+	u32 shift = pmf_next32(cmd);
+	u32 mask = pmf_next32(cmd);
+
+	LOG_PARSE("pmf: write_reg32_slm(offset: %x, shift: %x, mask: %x\n",
+		  offset, shift, mask);
+
+	PMF_PARSE_CALL(write_reg32_slm, cmd, h, offset, shift, mask);
+}
+
+static int pmf_parser_write_reg16_slm(struct pmf_cmd *cmd,
+				      struct pmf_handlers *h)
+{
+	u32 offset = pmf_next32(cmd);
+	u32 shift = pmf_next32(cmd);
+	u32 mask = pmf_next32(cmd);
+
+	LOG_PARSE("pmf: write_reg16_slm(offset: %x, shift: %x, mask: %x\n",
+		  offset, shift, mask);
+
+	PMF_PARSE_CALL(write_reg16_slm, cmd, h, offset, shift, mask);
+}
+
+static int pmf_parser_write_reg8_slm(struct pmf_cmd *cmd,
+				     struct pmf_handlers *h)
+{
+	u32 offset = pmf_next32(cmd);
+	u32 shift = pmf_next32(cmd);
+	u32 mask = pmf_next32(cmd);
+
+	LOG_PARSE("pmf: write_reg8_slm(offset: %x, shift: %x, mask: %x\n",
+		  offset, shift, mask);
+
+	PMF_PARSE_CALL(write_reg8_slm, cmd, h, offset, shift, mask);
+}
+
+static int pmf_parser_mask_and_compare(struct pmf_cmd *cmd,
+				       struct pmf_handlers *h)
+{
+	u32 bytes = pmf_next32(cmd);
+	const void *maskblob = pmf_next_blob(cmd, bytes);
+	const void *valuesblob = pmf_next_blob(cmd, bytes);
+
+	LOG_PARSE("pmf: mask_and_compare(length: %ud ...\n", bytes);
+	LOG_BLOB("pmf:   mask data: \n", maskblob, bytes);
+	LOG_BLOB("pmf:   values data: \n", valuesblob, bytes);
+
+	PMF_PARSE_CALL(mask_and_compare, cmd, h,
+		       bytes, maskblob, valuesblob);
+}
+
+
+typedef int (*pmf_cmd_parser_t)(struct pmf_cmd *cmd, struct pmf_handlers *h);
+
+static pmf_cmd_parser_t pmf_parsers[PMF_CMD_COUNT] =
+{
+	NULL,
+	pmf_parser_write_gpio,
+	pmf_parser_read_gpio,
+	pmf_parser_write_reg32,
+	pmf_parser_read_reg32,
+	pmf_parser_write_reg16,
+	pmf_parser_read_reg16,
+	pmf_parser_write_reg8,
+	pmf_parser_read_reg8,
+	pmf_parser_delay,
+	pmf_parser_wait_reg32,
+	pmf_parser_wait_reg16,
+	pmf_parser_wait_reg8,
+	pmf_parser_read_i2c,
+	pmf_parser_write_i2c,
+	pmf_parser_rmw_i2c,
+	NULL, /* Bogus command */
+	NULL, /* Shift bytes right: NYI */
+	NULL, /* Shift bytes left: NYI */
+	pmf_parser_read_cfg,
+	pmf_parser_write_cfg,
+	pmf_parser_rmw_cfg,
+	pmf_parser_read_i2c_sub,
+	pmf_parser_write_i2c_sub,
+	pmf_parser_set_i2c_mode,
+	pmf_parser_rmw_i2c_sub,
+	pmf_parser_read_reg32_msrx,
+	pmf_parser_read_reg16_msrx,
+	pmf_parser_read_reg8_msrx,
+	pmf_parser_write_reg32_slm,
+	pmf_parser_write_reg16_slm,
+	pmf_parser_write_reg8_slm,
+	pmf_parser_mask_and_compare,
+};
+
+struct pmf_device {
+	struct list_head	link;
+	struct device_node	*node;
+	struct pmf_handlers	*handlers;
+	struct list_head	functions;
+	struct kref		ref;
+};
+
+static LIST_HEAD(pmf_devices);
+static DEFINE_SPINLOCK(pmf_lock);
+static DEFINE_MUTEX(pmf_irq_mutex);
+
+static void pmf_release_device(struct kref *kref)
+{
+	struct pmf_device *dev = container_of(kref, struct pmf_device, ref);
+	kfree(dev);
+}
+
+static inline void pmf_put_device(struct pmf_device *dev)
+{
+	kref_put(&dev->ref, pmf_release_device);
+}
+
+static inline struct pmf_device *pmf_get_device(struct pmf_device *dev)
+{
+	kref_get(&dev->ref);
+	return dev;
+}
+
+static inline struct pmf_device *pmf_find_device(struct device_node *np)
+{
+	struct pmf_device *dev;
+
+	list_for_each_entry(dev, &pmf_devices, link) {
+		if (dev->node == np)
+			return pmf_get_device(dev);
+	}
+	return NULL;
+}
+
+static int pmf_parse_one(struct pmf_function *func,
+			 struct pmf_handlers *handlers,
+			 void *instdata, struct pmf_args *args)
+{
+	struct pmf_cmd cmd;
+	u32 ccode;
+	int count, rc;
+
+	cmd.cmdptr		= func->data;
+	cmd.cmdend		= func->data + func->length;
+	cmd.func       		= func;
+	cmd.instdata		= instdata;
+	cmd.args		= args;
+	cmd.error		= 0;
+
+	LOG_PARSE("pmf: func %s, %d bytes, %s...\n",
+		  func->name, func->length,
+		  handlers ? "executing" : "parsing");
+
+	/* One subcommand to parse for now */
+	count = 1;
+
+	while(count-- && cmd.cmdptr < cmd.cmdend) {
+		/* Get opcode */
+		ccode = pmf_next32(&cmd);
+		/* Check if we are hitting a command list, fetch new count */
+		if (ccode == 0) {
+			count = pmf_next32(&cmd) - 1;
+			ccode = pmf_next32(&cmd);
+		}
+		if (cmd.error) {
+			LOG_ERROR("pmf: parse error, not enough data\n");
+			return -ENXIO;
+		}
+		if (ccode >= PMF_CMD_COUNT) {
+			LOG_ERROR("pmf: command code %d unknown !\n", ccode);
+			return -ENXIO;
+		}
+		if (pmf_parsers[ccode] == NULL) {
+			LOG_ERROR("pmf: no parser for command %d !\n", ccode);
+			return -ENXIO;
+		}
+		rc = pmf_parsers[ccode](&cmd, handlers);
+		if (rc != 0) {
+			LOG_ERROR("pmf: parser for command %d returned"
+				  " error %d\n", ccode, rc);
+			return rc;
+		}
+	}
+
+	/* We are doing an initial parse pass, we need to adjust the size */
+	if (handlers == NULL)
+		func->length = cmd.cmdptr - func->data;
+
+	return 0;
+}
+
+static int pmf_add_function_prop(struct pmf_device *dev, void *driverdata,
+				 const char *name, u32 *data,
+				 unsigned int length)
+{
+	int count = 0;
+	struct pmf_function *func = NULL;
+
+	DBG("pmf: Adding functions for platform-do-%s\n", name);
+
+	while (length >= 12) {
+		/* Allocate a structure */
+		func = kzalloc(sizeof(*func), GFP_KERNEL);
+		if (func == NULL)
+			goto bail;
+		kref_init(&func->ref);
+		INIT_LIST_HEAD(&func->irq_clients);
+		func->node = dev->node;
+		func->driver_data = driverdata;
+		func->name = name;
+		func->phandle = data[0];
+		func->flags = data[1];
+		data += 2;
+		length -= 8;
+		func->data = data;
+		func->length = length;
+		func->dev = dev;
+		DBG("pmf: idx %d: flags=%08x, phandle=%08x "
+		    " %d bytes remaining, parsing...\n",
+		    count+1, func->flags, func->phandle, length);
+		if (pmf_parse_one(func, NULL, NULL, NULL)) {
+			kfree(func);
+			goto bail;
+		}
+		length -= func->length;
+		data = (u32 *)(((u8 *)data) + func->length);
+		list_add(&func->link, &dev->functions);
+		pmf_get_device(dev);
+		count++;
+	}
+ bail:
+	DBG("pmf: Added %d functions\n", count);
+
+	return count;
+}
+
+static int pmf_add_functions(struct pmf_device *dev, void *driverdata)
+{
+	struct property *pp;
+#define PP_PREFIX "platform-do-"
+	const int plen = strlen(PP_PREFIX);
+	int count = 0;
+
+	for_each_property_of_node(dev->node, pp) {
+		const char *name;
+		if (strncmp(pp->name, PP_PREFIX, plen) != 0)
+			continue;
+		name = pp->name + plen;
+		if (strlen(name) && pp->length >= 12)
+			count += pmf_add_function_prop(dev, driverdata, name,
+						       pp->value, pp->length);
+	}
+	return count;
+}
+
+
+int pmf_register_driver(struct device_node *np,
+			struct pmf_handlers *handlers,
+			void *driverdata)
+{
+	struct pmf_device *dev;
+	unsigned long flags;
+	int rc = 0;
+
+	if (handlers == NULL)
+		return -EINVAL;
+
+	DBG("pmf: registering driver for node %pOF\n", np);
+
+	spin_lock_irqsave(&pmf_lock, flags);
+	dev = pmf_find_device(np);
+	spin_unlock_irqrestore(&pmf_lock, flags);
+	if (dev != NULL) {
+		DBG("pmf: already there !\n");
+		pmf_put_device(dev);
+		return -EBUSY;
+	}
+
+	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+	if (dev == NULL) {
+		DBG("pmf: no memory !\n");
+		return -ENOMEM;
+	}
+	kref_init(&dev->ref);
+	dev->node = of_node_get(np);
+	dev->handlers = handlers;
+	INIT_LIST_HEAD(&dev->functions);
+
+	rc = pmf_add_functions(dev, driverdata);
+	if (rc == 0) {
+		DBG("pmf: no functions, disposing.. \n");
+		of_node_put(np);
+		kfree(dev);
+		return -ENODEV;
+	}
+
+	spin_lock_irqsave(&pmf_lock, flags);
+	list_add(&dev->link, &pmf_devices);
+	spin_unlock_irqrestore(&pmf_lock, flags);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(pmf_register_driver);
+
+struct pmf_function *pmf_get_function(struct pmf_function *func)
+{
+	if (!try_module_get(func->dev->handlers->owner))
+		return NULL;
+	kref_get(&func->ref);
+	return func;
+}
+EXPORT_SYMBOL_GPL(pmf_get_function);
+
+static void pmf_release_function(struct kref *kref)
+{
+	struct pmf_function *func =
+		container_of(kref, struct pmf_function, ref);
+	pmf_put_device(func->dev);
+	kfree(func);
+}
+
+static inline void __pmf_put_function(struct pmf_function *func)
+{
+	kref_put(&func->ref, pmf_release_function);
+}
+
+void pmf_put_function(struct pmf_function *func)
+{
+	if (func == NULL)
+		return;
+	module_put(func->dev->handlers->owner);
+	__pmf_put_function(func);
+}
+EXPORT_SYMBOL_GPL(pmf_put_function);
+
+void pmf_unregister_driver(struct device_node *np)
+{
+	struct pmf_device *dev;
+	unsigned long flags;
+
+	DBG("pmf: unregistering driver for node %pOF\n", np);
+
+	spin_lock_irqsave(&pmf_lock, flags);
+	dev = pmf_find_device(np);
+	if (dev == NULL) {
+		DBG("pmf: not such driver !\n");
+		spin_unlock_irqrestore(&pmf_lock, flags);
+		return;
+	}
+	list_del(&dev->link);
+
+	while(!list_empty(&dev->functions)) {
+		struct pmf_function *func =
+			list_entry(dev->functions.next, typeof(*func), link);
+		list_del(&func->link);
+		__pmf_put_function(func);
+	}
+
+	pmf_put_device(dev);
+	spin_unlock_irqrestore(&pmf_lock, flags);
+}
+EXPORT_SYMBOL_GPL(pmf_unregister_driver);
+
+static struct pmf_function *__pmf_find_function(struct device_node *target,
+					 const char *name, u32 flags)
+{
+	struct device_node *actor = of_node_get(target);
+	struct pmf_device *dev;
+	struct pmf_function *func, *result = NULL;
+	char fname[64];
+	const u32 *prop;
+	u32 ph;
+
+	/*
+	 * Look for a "platform-*" function reference. If we can't find
+	 * one, then we fallback to a direct call attempt
+	 */
+	snprintf(fname, 63, "platform-%s", name);
+	prop = of_get_property(target, fname, NULL);
+	if (prop == NULL)
+		goto find_it;
+	ph = *prop;
+	if (ph == 0)
+		goto find_it;
+
+	/*
+	 * Ok, now try to find the actor. If we can't find it, we fail,
+	 * there is no point in falling back there
+	 */
+	of_node_put(actor);
+	actor = of_find_node_by_phandle(ph);
+	if (actor == NULL)
+		return NULL;
+ find_it:
+	dev = pmf_find_device(actor);
+	if (dev == NULL) {
+		result = NULL;
+		goto out;
+	}
+
+	list_for_each_entry(func, &dev->functions, link) {
+		if (name && strcmp(name, func->name))
+			continue;
+		if (func->phandle && target->phandle != func->phandle)
+			continue;
+		if ((func->flags & flags) == 0)
+			continue;
+		result = func;
+		break;
+	}
+	pmf_put_device(dev);
+out:
+	of_node_put(actor);
+	return result;
+}
+
+
+int pmf_register_irq_client(struct device_node *target,
+			    const char *name,
+			    struct pmf_irq_client *client)
+{
+	struct pmf_function *func;
+	unsigned long flags;
+
+	spin_lock_irqsave(&pmf_lock, flags);
+	func = __pmf_find_function(target, name, PMF_FLAGS_INT_GEN);
+	if (func)
+		func = pmf_get_function(func);
+	spin_unlock_irqrestore(&pmf_lock, flags);
+	if (func == NULL)
+		return -ENODEV;
+
+	/* guard against manipulations of list */
+	mutex_lock(&pmf_irq_mutex);
+	if (list_empty(&func->irq_clients))
+		func->dev->handlers->irq_enable(func);
+
+	/* guard against pmf_do_irq while changing list */
+	spin_lock_irqsave(&pmf_lock, flags);
+	list_add(&client->link, &func->irq_clients);
+	spin_unlock_irqrestore(&pmf_lock, flags);
+
+	client->func = func;
+	mutex_unlock(&pmf_irq_mutex);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(pmf_register_irq_client);
+
+void pmf_unregister_irq_client(struct pmf_irq_client *client)
+{
+	struct pmf_function *func = client->func;
+	unsigned long flags;
+
+	BUG_ON(func == NULL);
+
+	/* guard against manipulations of list */
+	mutex_lock(&pmf_irq_mutex);
+	client->func = NULL;
+
+	/* guard against pmf_do_irq while changing list */
+	spin_lock_irqsave(&pmf_lock, flags);
+	list_del(&client->link);
+	spin_unlock_irqrestore(&pmf_lock, flags);
+
+	if (list_empty(&func->irq_clients))
+		func->dev->handlers->irq_disable(func);
+	mutex_unlock(&pmf_irq_mutex);
+	pmf_put_function(func);
+}
+EXPORT_SYMBOL_GPL(pmf_unregister_irq_client);
+
+
+void pmf_do_irq(struct pmf_function *func)
+{
+	unsigned long flags;
+	struct pmf_irq_client *client;
+
+	/* For now, using a spinlock over the whole function. Can be made
+	 * to drop the lock using 2 lists if necessary
+	 */
+	spin_lock_irqsave(&pmf_lock, flags);
+	list_for_each_entry(client, &func->irq_clients, link) {
+		if (!try_module_get(client->owner))
+			continue;
+		client->handler(client->data);
+		module_put(client->owner);
+	}
+	spin_unlock_irqrestore(&pmf_lock, flags);
+}
+EXPORT_SYMBOL_GPL(pmf_do_irq);
+
+
+int pmf_call_one(struct pmf_function *func, struct pmf_args *args)
+{
+	struct pmf_device *dev = func->dev;
+	void *instdata = NULL;
+	int rc = 0;
+
+	DBG(" ** pmf_call_one(%pOF/%s) **\n", dev->node, func->name);
+
+	if (dev->handlers->begin)
+		instdata = dev->handlers->begin(func, args);
+	rc = pmf_parse_one(func, dev->handlers, instdata, args);
+	if (dev->handlers->end)
+		dev->handlers->end(func, instdata);
+
+	return rc;
+}
+EXPORT_SYMBOL_GPL(pmf_call_one);
+
+int pmf_do_functions(struct device_node *np, const char *name,
+		     u32 phandle, u32 fflags, struct pmf_args *args)
+{
+	struct pmf_device *dev;
+	struct pmf_function *func, *tmp;
+	unsigned long flags;
+	int rc = -ENODEV;
+
+	spin_lock_irqsave(&pmf_lock, flags);
+
+	dev = pmf_find_device(np);
+	if (dev == NULL) {
+		spin_unlock_irqrestore(&pmf_lock, flags);
+		return -ENODEV;
+	}
+	list_for_each_entry_safe(func, tmp, &dev->functions, link) {
+		if (name && strcmp(name, func->name))
+			continue;
+		if (phandle && func->phandle && phandle != func->phandle)
+			continue;
+		if ((func->flags & fflags) == 0)
+			continue;
+		if (pmf_get_function(func) == NULL)
+			continue;
+		spin_unlock_irqrestore(&pmf_lock, flags);
+		rc = pmf_call_one(func, args);
+		pmf_put_function(func);
+		spin_lock_irqsave(&pmf_lock, flags);
+	}
+	pmf_put_device(dev);
+	spin_unlock_irqrestore(&pmf_lock, flags);
+
+	return rc;
+}
+EXPORT_SYMBOL_GPL(pmf_do_functions);
+
+
+struct pmf_function *pmf_find_function(struct device_node *target,
+				       const char *name)
+{
+	struct pmf_function *func;
+	unsigned long flags;
+
+	spin_lock_irqsave(&pmf_lock, flags);
+	func = __pmf_find_function(target, name, PMF_FLAGS_ON_DEMAND);
+	if (func)
+		func = pmf_get_function(func);
+	spin_unlock_irqrestore(&pmf_lock, flags);
+	return func;
+}
+EXPORT_SYMBOL_GPL(pmf_find_function);
+
+int pmf_call_function(struct device_node *target, const char *name,
+		      struct pmf_args *args)
+{
+	struct pmf_function *func = pmf_find_function(target, name);
+	int rc;
+
+	if (func == NULL)
+		return -ENODEV;
+
+	rc = pmf_call_one(func, args);
+	pmf_put_function(func);
+	return rc;
+}
+EXPORT_SYMBOL_GPL(pmf_call_function);
+