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, 419 insertions, 0 deletions

diff --git a/include/acpi/acpiosxf.h b/include/acpi/acpiosxf.h
new file mode 100644
index 000000000..52844cc5e
--- /dev/null
+++ b/include/acpi/acpiosxf.h
@@ -0,0 +1,419 @@
+/* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */
+/******************************************************************************
+ *
+ * Name: acpiosxf.h - All interfaces to the OS Services Layer (OSL). These
+ *                    interfaces must be implemented by OSL to interface the
+ *                    ACPI components to the host operating system.
+ *
+ * Copyright (C) 2000 - 2022, Intel Corp.
+ *
+ *****************************************************************************/
+
+#ifndef __ACPIOSXF_H__
+#define __ACPIOSXF_H__
+
+#include <acpi/platform/acenv.h>
+#include <acpi/actypes.h>
+
+/* Types for acpi_os_execute */
+
+typedef enum {
+	OSL_GLOBAL_LOCK_HANDLER,
+	OSL_NOTIFY_HANDLER,
+	OSL_GPE_HANDLER,
+	OSL_DEBUGGER_MAIN_THREAD,
+	OSL_DEBUGGER_EXEC_THREAD,
+	OSL_EC_POLL_HANDLER,
+	OSL_EC_BURST_HANDLER
+} acpi_execute_type;
+
+#define ACPI_NO_UNIT_LIMIT          ((u32) -1)
+#define ACPI_MUTEX_SEM              1
+
+/* Functions for acpi_os_signal */
+
+#define ACPI_SIGNAL_FATAL           0
+#define ACPI_SIGNAL_BREAKPOINT      1
+
+struct acpi_signal_fatal_info {
+	u32 type;
+	u32 code;
+	u32 argument;
+};
+
+/*
+ * OSL Initialization and shutdown primitives
+ */
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_initialize
+acpi_status acpi_os_initialize(void);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_terminate
+acpi_status acpi_os_terminate(void);
+#endif
+
+/*
+ * ACPI Table interfaces
+ */
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_root_pointer
+acpi_physical_address acpi_os_get_root_pointer(void);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_predefined_override
+acpi_status
+acpi_os_predefined_override(const struct acpi_predefined_names *init_val,
+			    acpi_string *new_val);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_table_override
+acpi_status
+acpi_os_table_override(struct acpi_table_header *existing_table,
+		       struct acpi_table_header **new_table);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_physical_table_override
+acpi_status
+acpi_os_physical_table_override(struct acpi_table_header *existing_table,
+				acpi_physical_address *new_address,
+				u32 *new_table_length);
+#endif
+
+/*
+ * Spinlock primitives
+ */
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_create_lock
+acpi_status acpi_os_create_lock(acpi_spinlock * out_handle);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_delete_lock
+void acpi_os_delete_lock(acpi_spinlock handle);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_acquire_lock
+acpi_cpu_flags acpi_os_acquire_lock(acpi_spinlock handle);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_release_lock
+void acpi_os_release_lock(acpi_spinlock handle, acpi_cpu_flags flags);
+#endif
+
+/*
+ * RAW spinlock primitives. If the OS does not provide them, fallback to
+ * spinlock primitives
+ */
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_create_raw_lock
+# define acpi_os_create_raw_lock(out_handle)	acpi_os_create_lock(out_handle)
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_delete_raw_lock
+# define acpi_os_delete_raw_lock(handle)	acpi_os_delete_lock(handle)
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_acquire_raw_lock
+# define acpi_os_acquire_raw_lock(handle)	acpi_os_acquire_lock(handle)
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_release_raw_lock
+# define acpi_os_release_raw_lock(handle, flags)	\
+	acpi_os_release_lock(handle, flags)
+#endif
+
+/*
+ * Semaphore primitives
+ */
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_create_semaphore
+acpi_status
+acpi_os_create_semaphore(u32 max_units,
+			 u32 initial_units, acpi_semaphore * out_handle);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_delete_semaphore
+acpi_status acpi_os_delete_semaphore(acpi_semaphore handle);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_wait_semaphore
+acpi_status
+acpi_os_wait_semaphore(acpi_semaphore handle, u32 units, u16 timeout);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_signal_semaphore
+acpi_status acpi_os_signal_semaphore(acpi_semaphore handle, u32 units);
+#endif
+
+/*
+ * Mutex primitives. May be configured to use semaphores instead via
+ * ACPI_MUTEX_TYPE (see platform/acenv.h)
+ */
+#if (ACPI_MUTEX_TYPE != ACPI_BINARY_SEMAPHORE)
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_create_mutex
+acpi_status acpi_os_create_mutex(acpi_mutex * out_handle);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_delete_mutex
+void acpi_os_delete_mutex(acpi_mutex handle);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_acquire_mutex
+acpi_status acpi_os_acquire_mutex(acpi_mutex handle, u16 timeout);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_release_mutex
+void acpi_os_release_mutex(acpi_mutex handle);
+#endif
+
+#endif
+
+/*
+ * Memory allocation and mapping
+ */
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_allocate
+void *acpi_os_allocate(acpi_size size);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_allocate_zeroed
+void *acpi_os_allocate_zeroed(acpi_size size);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_free
+void acpi_os_free(void *memory);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_map_memory
+void *acpi_os_map_memory(acpi_physical_address where, acpi_size length);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_unmap_memory
+void acpi_os_unmap_memory(void *logical_address, acpi_size size);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_physical_address
+acpi_status
+acpi_os_get_physical_address(void *logical_address,
+			     acpi_physical_address *physical_address);
+#endif
+
+/*
+ * Memory/Object Cache
+ */
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_create_cache
+acpi_status
+acpi_os_create_cache(char *cache_name,
+		     u16 object_size,
+		     u16 max_depth, acpi_cache_t ** return_cache);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_delete_cache
+acpi_status acpi_os_delete_cache(acpi_cache_t * cache);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_purge_cache
+acpi_status acpi_os_purge_cache(acpi_cache_t * cache);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_acquire_object
+void *acpi_os_acquire_object(acpi_cache_t * cache);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_release_object
+acpi_status acpi_os_release_object(acpi_cache_t * cache, void *object);
+#endif
+
+/*
+ * Interrupt handlers
+ */
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_install_interrupt_handler
+acpi_status
+acpi_os_install_interrupt_handler(u32 interrupt_number,
+				  acpi_osd_handler service_routine,
+				  void *context);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_remove_interrupt_handler
+acpi_status
+acpi_os_remove_interrupt_handler(u32 interrupt_number,
+				 acpi_osd_handler service_routine);
+#endif
+
+/*
+ * Threads and Scheduling
+ */
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_thread_id
+acpi_thread_id acpi_os_get_thread_id(void);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_execute
+acpi_status
+acpi_os_execute(acpi_execute_type type,
+		acpi_osd_exec_callback function, void *context);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_wait_events_complete
+void acpi_os_wait_events_complete(void);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_sleep
+void acpi_os_sleep(u64 milliseconds);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_stall
+void acpi_os_stall(u32 microseconds);
+#endif
+
+/*
+ * Platform and hardware-independent I/O interfaces
+ */
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_read_port
+acpi_status acpi_os_read_port(acpi_io_address address, u32 *value, u32 width);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_write_port
+acpi_status acpi_os_write_port(acpi_io_address address, u32 value, u32 width);
+#endif
+
+/*
+ * Platform and hardware-independent physical memory interfaces
+ */
+int acpi_os_read_iomem(void __iomem *virt_addr, u64 *value, u32 width);
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_read_memory
+acpi_status
+acpi_os_read_memory(acpi_physical_address address, u64 *value, u32 width);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_write_memory
+acpi_status
+acpi_os_write_memory(acpi_physical_address address, u64 value, u32 width);
+#endif
+
+/*
+ * Platform and hardware-independent PCI configuration space access
+ * Note: Can't use "Register" as a parameter, changed to "Reg" --
+ * certain compilers complain.
+ */
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_read_pci_configuration
+acpi_status
+acpi_os_read_pci_configuration(struct acpi_pci_id *pci_id,
+			       u32 reg, u64 *value, u32 width);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_write_pci_configuration
+acpi_status
+acpi_os_write_pci_configuration(struct acpi_pci_id *pci_id,
+				u32 reg, u64 value, u32 width);
+#endif
+
+/*
+ * Miscellaneous
+ */
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_readable
+u8 acpi_os_readable(void *pointer, acpi_size length);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_writable
+u8 acpi_os_writable(void *pointer, acpi_size length);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_timer
+u64 acpi_os_get_timer(void);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_signal
+acpi_status acpi_os_signal(u32 function, void *info);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_enter_sleep
+acpi_status acpi_os_enter_sleep(u8 sleep_state, u32 rega_value, u32 regb_value);
+#endif
+
+/*
+ * Debug print routines
+ */
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_printf
+ACPI_PRINTF_LIKE(1)
+void ACPI_INTERNAL_VAR_XFACE acpi_os_printf(const char *format, ...);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_vprintf
+void acpi_os_vprintf(const char *format, va_list args);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_redirect_output
+void acpi_os_redirect_output(void *destination);
+#endif
+
+/*
+ * Debug IO
+ */
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_line
+acpi_status acpi_os_get_line(char *buffer, u32 buffer_length, u32 *bytes_read);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_initialize_debugger
+acpi_status acpi_os_initialize_debugger(void);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_terminate_debugger
+void acpi_os_terminate_debugger(void);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_wait_command_ready
+acpi_status acpi_os_wait_command_ready(void);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_notify_command_complete
+acpi_status acpi_os_notify_command_complete(void);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_trace_point
+void
+acpi_os_trace_point(acpi_trace_event_type type,
+		    u8 begin, u8 *aml, char *pathname);
+#endif
+
+/*
+ * Obtain ACPI table(s)
+ */
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_table_by_name
+acpi_status
+acpi_os_get_table_by_name(char *signature,
+			  u32 instance,
+			  struct acpi_table_header **table,
+			  acpi_physical_address *address);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_table_by_index
+acpi_status
+acpi_os_get_table_by_index(u32 index,
+			   struct acpi_table_header **table,
+			   u32 *instance, acpi_physical_address *address);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_table_by_address
+acpi_status
+acpi_os_get_table_by_address(acpi_physical_address address,
+			     struct acpi_table_header **table);
+#endif
+
+/*
+ * Directory manipulation
+ */
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_open_directory
+void *acpi_os_open_directory(char *pathname,
+			     char *wildcard_spec, char requested_file_type);
+#endif
+
+/* requeste_file_type values */
+
+#define REQUEST_FILE_ONLY                   0
+#define REQUEST_DIR_ONLY                    1
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_next_filename
+char *acpi_os_get_next_filename(void *dir_handle);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_close_directory
+void acpi_os_close_directory(void *dir_handle);
+#endif
+
+#endif				/* __ACPIOSXF_H__ */