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, 762 insertions, 0 deletions

diff --git a/drivers/acpi/acpica/dsopcode.c b/drivers/acpi/acpica/dsopcode.c
new file mode 100644
index 000000000..2b9b6a974
--- /dev/null
+++ b/drivers/acpi/acpica/dsopcode.c
@@ -0,0 +1,762 @@
+// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
+/******************************************************************************
+ *
+ * Module Name: dsopcode - Dispatcher support for regions and fields
+ *
+ * Copyright (C) 2000 - 2022, Intel Corp.
+ *
+ *****************************************************************************/
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acparser.h"
+#include "amlcode.h"
+#include "acdispat.h"
+#include "acinterp.h"
+#include "acnamesp.h"
+#include "acevents.h"
+#include "actables.h"
+
+#define _COMPONENT          ACPI_DISPATCHER
+ACPI_MODULE_NAME("dsopcode")
+
+/* Local prototypes */
+static acpi_status
+acpi_ds_init_buffer_field(u16 aml_opcode,
+			  union acpi_operand_object *obj_desc,
+			  union acpi_operand_object *buffer_desc,
+			  union acpi_operand_object *offset_desc,
+			  union acpi_operand_object *length_desc,
+			  union acpi_operand_object *result_desc);
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ds_initialize_region
+ *
+ * PARAMETERS:  obj_handle      - Region namespace node
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Front end to ev_initialize_region
+ *
+ ******************************************************************************/
+
+acpi_status acpi_ds_initialize_region(acpi_handle obj_handle)
+{
+	union acpi_operand_object *obj_desc;
+	acpi_status status;
+
+	obj_desc = acpi_ns_get_attached_object(obj_handle);
+
+	/* Namespace is NOT locked */
+
+	status = acpi_ev_initialize_region(obj_desc);
+	return (status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ds_init_buffer_field
+ *
+ * PARAMETERS:  aml_opcode      - create_xxx_field
+ *              obj_desc        - buffer_field object
+ *              buffer_desc     - Host Buffer
+ *              offset_desc     - Offset into buffer
+ *              length_desc     - Length of field (CREATE_FIELD_OP only)
+ *              result_desc     - Where to store the result
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Perform actual initialization of a buffer field
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_ds_init_buffer_field(u16 aml_opcode,
+			  union acpi_operand_object *obj_desc,
+			  union acpi_operand_object *buffer_desc,
+			  union acpi_operand_object *offset_desc,
+			  union acpi_operand_object *length_desc,
+			  union acpi_operand_object *result_desc)
+{
+	u32 offset;
+	u32 bit_offset;
+	u32 bit_count;
+	u8 field_flags;
+	acpi_status status;
+
+	ACPI_FUNCTION_TRACE_PTR(ds_init_buffer_field, obj_desc);
+
+	/* Host object must be a Buffer */
+
+	if (buffer_desc->common.type != ACPI_TYPE_BUFFER) {
+		ACPI_ERROR((AE_INFO,
+			    "Target of Create Field is not a Buffer object - %s",
+			    acpi_ut_get_object_type_name(buffer_desc)));
+
+		status = AE_AML_OPERAND_TYPE;
+		goto cleanup;
+	}
+
+	/*
+	 * The last parameter to all of these opcodes (result_desc) started
+	 * out as a name_string, and should therefore now be a NS node
+	 * after resolution in acpi_ex_resolve_operands().
+	 */
+	if (ACPI_GET_DESCRIPTOR_TYPE(result_desc) != ACPI_DESC_TYPE_NAMED) {
+		ACPI_ERROR((AE_INFO,
+			    "(%s) destination not a NS Node [%s]",
+			    acpi_ps_get_opcode_name(aml_opcode),
+			    acpi_ut_get_descriptor_name(result_desc)));
+
+		status = AE_AML_OPERAND_TYPE;
+		goto cleanup;
+	}
+
+	offset = (u32) offset_desc->integer.value;
+
+	/*
+	 * Setup the Bit offsets and counts, according to the opcode
+	 */
+	switch (aml_opcode) {
+	case AML_CREATE_FIELD_OP:
+
+		/* Offset is in bits, count is in bits */
+
+		field_flags = AML_FIELD_ACCESS_BYTE;
+		bit_offset = offset;
+		bit_count = (u32) length_desc->integer.value;
+
+		/* Must have a valid (>0) bit count */
+
+		if (bit_count == 0) {
+			ACPI_BIOS_ERROR((AE_INFO,
+					 "Attempt to CreateField of length zero"));
+			status = AE_AML_OPERAND_VALUE;
+			goto cleanup;
+		}
+		break;
+
+	case AML_CREATE_BIT_FIELD_OP:
+
+		/* Offset is in bits, Field is one bit */
+
+		bit_offset = offset;
+		bit_count = 1;
+		field_flags = AML_FIELD_ACCESS_BYTE;
+		break;
+
+	case AML_CREATE_BYTE_FIELD_OP:
+
+		/* Offset is in bytes, field is one byte */
+
+		bit_offset = 8 * offset;
+		bit_count = 8;
+		field_flags = AML_FIELD_ACCESS_BYTE;
+		break;
+
+	case AML_CREATE_WORD_FIELD_OP:
+
+		/* Offset is in bytes, field is one word */
+
+		bit_offset = 8 * offset;
+		bit_count = 16;
+		field_flags = AML_FIELD_ACCESS_WORD;
+		break;
+
+	case AML_CREATE_DWORD_FIELD_OP:
+
+		/* Offset is in bytes, field is one dword */
+
+		bit_offset = 8 * offset;
+		bit_count = 32;
+		field_flags = AML_FIELD_ACCESS_DWORD;
+		break;
+
+	case AML_CREATE_QWORD_FIELD_OP:
+
+		/* Offset is in bytes, field is one qword */
+
+		bit_offset = 8 * offset;
+		bit_count = 64;
+		field_flags = AML_FIELD_ACCESS_QWORD;
+		break;
+
+	default:
+
+		ACPI_ERROR((AE_INFO,
+			    "Unknown field creation opcode 0x%02X",
+			    aml_opcode));
+		status = AE_AML_BAD_OPCODE;
+		goto cleanup;
+	}
+
+	/* Entire field must fit within the current length of the buffer */
+
+	if ((bit_offset + bit_count) > (8 * (u32)buffer_desc->buffer.length)) {
+		status = AE_AML_BUFFER_LIMIT;
+		ACPI_BIOS_EXCEPTION((AE_INFO, status,
+				     "Field [%4.4s] at bit offset/length %u/%u "
+				     "exceeds size of target Buffer (%u bits)",
+				     acpi_ut_get_node_name(result_desc),
+				     bit_offset, bit_count,
+				     8 * (u32)buffer_desc->buffer.length));
+		goto cleanup;
+	}
+
+	/*
+	 * Initialize areas of the field object that are common to all fields
+	 * For field_flags, use LOCK_RULE = 0 (NO_LOCK),
+	 * UPDATE_RULE = 0 (UPDATE_PRESERVE)
+	 */
+	status =
+	    acpi_ex_prep_common_field_object(obj_desc, field_flags, 0,
+					     bit_offset, bit_count);
+	if (ACPI_FAILURE(status)) {
+		goto cleanup;
+	}
+
+	obj_desc->buffer_field.buffer_obj = buffer_desc;
+	obj_desc->buffer_field.is_create_field =
+	    aml_opcode == AML_CREATE_FIELD_OP;
+
+	/* Reference count for buffer_desc inherits obj_desc count */
+
+	buffer_desc->common.reference_count = (u16)
+	    (buffer_desc->common.reference_count +
+	     obj_desc->common.reference_count);
+
+cleanup:
+
+	/* Always delete the operands */
+
+	acpi_ut_remove_reference(offset_desc);
+	acpi_ut_remove_reference(buffer_desc);
+
+	if (aml_opcode == AML_CREATE_FIELD_OP) {
+		acpi_ut_remove_reference(length_desc);
+	}
+
+	/* On failure, delete the result descriptor */
+
+	if (ACPI_FAILURE(status)) {
+		acpi_ut_remove_reference(result_desc);	/* Result descriptor */
+	} else {
+		/* Now the address and length are valid for this buffer_field */
+
+		obj_desc->buffer_field.flags |= AOPOBJ_DATA_VALID;
+	}
+
+	return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ds_eval_buffer_field_operands
+ *
+ * PARAMETERS:  walk_state      - Current walk
+ *              op              - A valid buffer_field Op object
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Get buffer_field Buffer and Index
+ *              Called from acpi_ds_exec_end_op during buffer_field parse tree walk
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ds_eval_buffer_field_operands(struct acpi_walk_state *walk_state,
+				   union acpi_parse_object *op)
+{
+	acpi_status status;
+	union acpi_operand_object *obj_desc;
+	struct acpi_namespace_node *node;
+	union acpi_parse_object *next_op;
+
+	ACPI_FUNCTION_TRACE_PTR(ds_eval_buffer_field_operands, op);
+
+	/*
+	 * This is where we evaluate the address and length fields of the
+	 * create_xxx_field declaration
+	 */
+	node = op->common.node;
+
+	/* next_op points to the op that holds the Buffer */
+
+	next_op = op->common.value.arg;
+
+	/* Evaluate/create the address and length operands */
+
+	status = acpi_ds_create_operands(walk_state, next_op);
+	if (ACPI_FAILURE(status)) {
+		return_ACPI_STATUS(status);
+	}
+
+	obj_desc = acpi_ns_get_attached_object(node);
+	if (!obj_desc) {
+		return_ACPI_STATUS(AE_NOT_EXIST);
+	}
+
+	/* Resolve the operands */
+
+	status =
+	    acpi_ex_resolve_operands(op->common.aml_opcode, ACPI_WALK_OPERANDS,
+				     walk_state);
+	if (ACPI_FAILURE(status)) {
+		ACPI_ERROR((AE_INFO, "(%s) bad operand(s), status 0x%X",
+			    acpi_ps_get_opcode_name(op->common.aml_opcode),
+			    status));
+
+		return_ACPI_STATUS(status);
+	}
+
+	/* Initialize the Buffer Field */
+
+	if (op->common.aml_opcode == AML_CREATE_FIELD_OP) {
+
+		/* NOTE: Slightly different operands for this opcode */
+
+		status =
+		    acpi_ds_init_buffer_field(op->common.aml_opcode, obj_desc,
+					      walk_state->operands[0],
+					      walk_state->operands[1],
+					      walk_state->operands[2],
+					      walk_state->operands[3]);
+	} else {
+		/* All other, create_xxx_field opcodes */
+
+		status =
+		    acpi_ds_init_buffer_field(op->common.aml_opcode, obj_desc,
+					      walk_state->operands[0],
+					      walk_state->operands[1], NULL,
+					      walk_state->operands[2]);
+	}
+
+	return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ds_eval_region_operands
+ *
+ * PARAMETERS:  walk_state      - Current walk
+ *              op              - A valid region Op object
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Get region address and length
+ *              Called from acpi_ds_exec_end_op during op_region parse tree walk
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ds_eval_region_operands(struct acpi_walk_state *walk_state,
+			     union acpi_parse_object *op)
+{
+	acpi_status status;
+	union acpi_operand_object *obj_desc;
+	union acpi_operand_object *operand_desc;
+	struct acpi_namespace_node *node;
+	union acpi_parse_object *next_op;
+	acpi_adr_space_type space_id;
+
+	ACPI_FUNCTION_TRACE_PTR(ds_eval_region_operands, op);
+
+	/*
+	 * This is where we evaluate the address and length fields of the
+	 * op_region declaration
+	 */
+	node = op->common.node;
+
+	/* next_op points to the op that holds the space_ID */
+
+	next_op = op->common.value.arg;
+	space_id = (acpi_adr_space_type)next_op->common.value.integer;
+
+	/* next_op points to address op */
+
+	next_op = next_op->common.next;
+
+	/* Evaluate/create the address and length operands */
+
+	status = acpi_ds_create_operands(walk_state, next_op);
+	if (ACPI_FAILURE(status)) {
+		return_ACPI_STATUS(status);
+	}
+
+	/* Resolve the length and address operands to numbers */
+
+	status =
+	    acpi_ex_resolve_operands(op->common.aml_opcode, ACPI_WALK_OPERANDS,
+				     walk_state);
+	if (ACPI_FAILURE(status)) {
+		return_ACPI_STATUS(status);
+	}
+
+	obj_desc = acpi_ns_get_attached_object(node);
+	if (!obj_desc) {
+		return_ACPI_STATUS(AE_NOT_EXIST);
+	}
+
+	/*
+	 * Get the length operand and save it
+	 * (at Top of stack)
+	 */
+	operand_desc = walk_state->operands[walk_state->num_operands - 1];
+
+	obj_desc->region.length = (u32) operand_desc->integer.value;
+	acpi_ut_remove_reference(operand_desc);
+
+	/* A zero-length operation region is unusable. Just warn */
+
+	if (!obj_desc->region.length
+	    && (space_id < ACPI_NUM_PREDEFINED_REGIONS)) {
+		ACPI_WARNING((AE_INFO,
+			      "Operation Region [%4.4s] has zero length (SpaceId %X)",
+			      node->name.ascii, space_id));
+	}
+
+	/*
+	 * Get the address and save it
+	 * (at top of stack - 1)
+	 */
+	operand_desc = walk_state->operands[walk_state->num_operands - 2];
+
+	obj_desc->region.address = (acpi_physical_address)
+	    operand_desc->integer.value;
+	acpi_ut_remove_reference(operand_desc);
+
+	ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "RgnObj %p Addr %8.8X%8.8X Len %X\n",
+			  obj_desc,
+			  ACPI_FORMAT_UINT64(obj_desc->region.address),
+			  obj_desc->region.length));
+
+	status = acpi_ut_add_address_range(obj_desc->region.space_id,
+					   obj_desc->region.address,
+					   obj_desc->region.length, node);
+
+	/* Now the address and length are valid for this opregion */
+
+	obj_desc->region.flags |= AOPOBJ_DATA_VALID;
+	return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ds_eval_table_region_operands
+ *
+ * PARAMETERS:  walk_state      - Current walk
+ *              op              - A valid region Op object
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Get region address and length.
+ *              Called from acpi_ds_exec_end_op during data_table_region parse
+ *              tree walk.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ds_eval_table_region_operands(struct acpi_walk_state *walk_state,
+				   union acpi_parse_object *op)
+{
+	acpi_status status;
+	union acpi_operand_object *obj_desc;
+	union acpi_operand_object **operand;
+	struct acpi_namespace_node *node;
+	union acpi_parse_object *next_op;
+	struct acpi_table_header *table;
+	u32 table_index;
+
+	ACPI_FUNCTION_TRACE_PTR(ds_eval_table_region_operands, op);
+
+	/*
+	 * This is where we evaluate the Signature string, oem_id string,
+	 * and oem_table_id string of the Data Table Region declaration
+	 */
+	node = op->common.node;
+
+	/* next_op points to Signature string op */
+
+	next_op = op->common.value.arg;
+
+	/*
+	 * Evaluate/create the Signature string, oem_id string,
+	 * and oem_table_id string operands
+	 */
+	status = acpi_ds_create_operands(walk_state, next_op);
+	if (ACPI_FAILURE(status)) {
+		return_ACPI_STATUS(status);
+	}
+
+	operand = &walk_state->operands[0];
+
+	/*
+	 * Resolve the Signature string, oem_id string,
+	 * and oem_table_id string operands
+	 */
+	status =
+	    acpi_ex_resolve_operands(op->common.aml_opcode, ACPI_WALK_OPERANDS,
+				     walk_state);
+	if (ACPI_FAILURE(status)) {
+		goto cleanup;
+	}
+
+	/* Find the ACPI table */
+
+	status = acpi_tb_find_table(operand[0]->string.pointer,
+				    operand[1]->string.pointer,
+				    operand[2]->string.pointer, &table_index);
+	if (ACPI_FAILURE(status)) {
+		if (status == AE_NOT_FOUND) {
+			ACPI_ERROR((AE_INFO,
+				    "ACPI Table [%4.4s] OEM:(%s, %s) not found in RSDT/XSDT",
+				    operand[0]->string.pointer,
+				    operand[1]->string.pointer,
+				    operand[2]->string.pointer));
+		}
+		goto cleanup;
+	}
+
+	status = acpi_get_table_by_index(table_index, &table);
+	if (ACPI_FAILURE(status)) {
+		goto cleanup;
+	}
+
+	obj_desc = acpi_ns_get_attached_object(node);
+	if (!obj_desc) {
+		status = AE_NOT_EXIST;
+		goto cleanup;
+	}
+
+	obj_desc->region.address = ACPI_PTR_TO_PHYSADDR(table);
+	obj_desc->region.length = table->length;
+	obj_desc->region.pointer = table;
+
+	ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "RgnObj %p Addr %8.8X%8.8X Len %X\n",
+			  obj_desc,
+			  ACPI_FORMAT_UINT64(obj_desc->region.address),
+			  obj_desc->region.length));
+
+	/* Now the address and length are valid for this opregion */
+
+	obj_desc->region.flags |= AOPOBJ_DATA_VALID;
+
+cleanup:
+	acpi_ut_remove_reference(operand[0]);
+	acpi_ut_remove_reference(operand[1]);
+	acpi_ut_remove_reference(operand[2]);
+
+	return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ds_eval_data_object_operands
+ *
+ * PARAMETERS:  walk_state      - Current walk
+ *              op              - A valid data_object Op object
+ *              obj_desc        - data_object
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Get the operands and complete the following data object types:
+ *              Buffer, Package.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ds_eval_data_object_operands(struct acpi_walk_state *walk_state,
+				  union acpi_parse_object *op,
+				  union acpi_operand_object *obj_desc)
+{
+	acpi_status status;
+	union acpi_operand_object *arg_desc;
+	u32 length;
+
+	ACPI_FUNCTION_TRACE(ds_eval_data_object_operands);
+
+	/* The first operand (for all of these data objects) is the length */
+
+	/*
+	 * Set proper index into operand stack for acpi_ds_obj_stack_push
+	 * invoked inside acpi_ds_create_operand.
+	 */
+	walk_state->operand_index = walk_state->num_operands;
+
+	/* Ignore if child is not valid */
+
+	if (!op->common.value.arg) {
+		ACPI_ERROR((AE_INFO,
+			    "Missing child while evaluating opcode %4.4X, Op %p",
+			    op->common.aml_opcode, op));
+		return_ACPI_STATUS(AE_OK);
+	}
+
+	status = acpi_ds_create_operand(walk_state, op->common.value.arg, 1);
+	if (ACPI_FAILURE(status)) {
+		return_ACPI_STATUS(status);
+	}
+
+	status = acpi_ex_resolve_operands(walk_state->opcode,
+					  &(walk_state->
+					    operands[walk_state->num_operands -
+						     1]), walk_state);
+	if (ACPI_FAILURE(status)) {
+		return_ACPI_STATUS(status);
+	}
+
+	/* Extract length operand */
+
+	arg_desc = walk_state->operands[walk_state->num_operands - 1];
+	length = (u32) arg_desc->integer.value;
+
+	/* Cleanup for length operand */
+
+	status = acpi_ds_obj_stack_pop(1, walk_state);
+	if (ACPI_FAILURE(status)) {
+		return_ACPI_STATUS(status);
+	}
+
+	acpi_ut_remove_reference(arg_desc);
+
+	/*
+	 * Create the actual data object
+	 */
+	switch (op->common.aml_opcode) {
+	case AML_BUFFER_OP:
+
+		status =
+		    acpi_ds_build_internal_buffer_obj(walk_state, op, length,
+						      &obj_desc);
+		break;
+
+	case AML_PACKAGE_OP:
+	case AML_VARIABLE_PACKAGE_OP:
+
+		status =
+		    acpi_ds_build_internal_package_obj(walk_state, op, length,
+						       &obj_desc);
+		break;
+
+	default:
+
+		return_ACPI_STATUS(AE_AML_BAD_OPCODE);
+	}
+
+	if (ACPI_SUCCESS(status)) {
+		/*
+		 * Return the object in the walk_state, unless the parent is a package -
+		 * in this case, the return object will be stored in the parse tree
+		 * for the package.
+		 */
+		if ((!op->common.parent) ||
+		    ((op->common.parent->common.aml_opcode != AML_PACKAGE_OP) &&
+		     (op->common.parent->common.aml_opcode !=
+		      AML_VARIABLE_PACKAGE_OP)
+		     && (op->common.parent->common.aml_opcode !=
+			 AML_NAME_OP))) {
+			walk_state->result_obj = obj_desc;
+		}
+	}
+
+	return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ds_eval_bank_field_operands
+ *
+ * PARAMETERS:  walk_state      - Current walk
+ *              op              - A valid bank_field Op object
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Get bank_field bank_value
+ *              Called from acpi_ds_exec_end_op during bank_field parse tree walk
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ds_eval_bank_field_operands(struct acpi_walk_state *walk_state,
+				 union acpi_parse_object *op)
+{
+	acpi_status status;
+	union acpi_operand_object *obj_desc;
+	union acpi_operand_object *operand_desc;
+	struct acpi_namespace_node *node;
+	union acpi_parse_object *next_op;
+	union acpi_parse_object *arg;
+
+	ACPI_FUNCTION_TRACE_PTR(ds_eval_bank_field_operands, op);
+
+	/*
+	 * This is where we evaluate the bank_value field of the
+	 * bank_field declaration
+	 */
+
+	/* next_op points to the op that holds the Region */
+
+	next_op = op->common.value.arg;
+
+	/* next_op points to the op that holds the Bank Register */
+
+	next_op = next_op->common.next;
+
+	/* next_op points to the op that holds the Bank Value */
+
+	next_op = next_op->common.next;
+
+	/*
+	 * Set proper index into operand stack for acpi_ds_obj_stack_push
+	 * invoked inside acpi_ds_create_operand.
+	 *
+	 * We use walk_state->Operands[0] to store the evaluated bank_value
+	 */
+	walk_state->operand_index = 0;
+
+	status = acpi_ds_create_operand(walk_state, next_op, 0);
+	if (ACPI_FAILURE(status)) {
+		return_ACPI_STATUS(status);
+	}
+
+	status = acpi_ex_resolve_to_value(&walk_state->operands[0], walk_state);
+	if (ACPI_FAILURE(status)) {
+		return_ACPI_STATUS(status);
+	}
+
+	ACPI_DUMP_OPERANDS(ACPI_WALK_OPERANDS,
+			   acpi_ps_get_opcode_name(op->common.aml_opcode), 1);
+	/*
+	 * Get the bank_value operand and save it
+	 * (at Top of stack)
+	 */
+	operand_desc = walk_state->operands[0];
+
+	/* Arg points to the start Bank Field */
+
+	arg = acpi_ps_get_arg(op, 4);
+	while (arg) {
+
+		/* Ignore OFFSET and ACCESSAS terms here */
+
+		if (arg->common.aml_opcode == AML_INT_NAMEDFIELD_OP) {
+			node = arg->common.node;
+
+			obj_desc = acpi_ns_get_attached_object(node);
+			if (!obj_desc) {
+				return_ACPI_STATUS(AE_NOT_EXIST);
+			}
+
+			obj_desc->bank_field.value =
+			    (u32) operand_desc->integer.value;
+		}
+
+		/* Move to next field in the list */
+
+		arg = arg->common.next;
+	}
+
+	acpi_ut_remove_reference(operand_desc);
+	return_ACPI_STATUS(status);
+}