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, 1185 insertions, 0 deletions

diff --git a/drivers/net/wireless/intel/iwlwifi/fw/acpi.c b/drivers/net/wireless/intel/iwlwifi/fw/acpi.c
new file mode 100644
index 000000000..a02e5a67b
--- /dev/null
+++ b/drivers/net/wireless/intel/iwlwifi/fw/acpi.c
@@ -0,0 +1,1185 @@
+// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
+/*
+ * Copyright (C) 2017 Intel Deutschland GmbH
+ * Copyright (C) 2019-2022 Intel Corporation
+ */
+#include <linux/uuid.h>
+#include <linux/dmi.h>
+#include "iwl-drv.h"
+#include "iwl-debug.h"
+#include "acpi.h"
+#include "fw/runtime.h"
+
+const guid_t iwl_guid = GUID_INIT(0xF21202BF, 0x8F78, 0x4DC6,
+				  0xA5, 0xB3, 0x1F, 0x73,
+				  0x8E, 0x28, 0x5A, 0xDE);
+IWL_EXPORT_SYMBOL(iwl_guid);
+
+const guid_t iwl_rfi_guid = GUID_INIT(0x7266172C, 0x220B, 0x4B29,
+				      0x81, 0x4F, 0x75, 0xE4,
+				      0xDD, 0x26, 0xB5, 0xFD);
+IWL_EXPORT_SYMBOL(iwl_rfi_guid);
+
+static const struct dmi_system_id dmi_ppag_approved_list[] = {
+	{ .ident = "HP",
+	  .matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "HP"),
+		},
+	},
+	{ .ident = "SAMSUNG",
+	  .matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD"),
+		},
+	},
+	{ .ident = "MSFT",
+	  .matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
+		},
+	},
+	{ .ident = "ASUS",
+	  .matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "ASUSTek COMPUTER INC."),
+		},
+	},
+	{}
+};
+
+static int iwl_acpi_get_handle(struct device *dev, acpi_string method,
+			       acpi_handle *ret_handle)
+{
+	acpi_handle root_handle;
+	acpi_status status;
+
+	root_handle = ACPI_HANDLE(dev);
+	if (!root_handle) {
+		IWL_DEBUG_DEV_RADIO(dev,
+				    "ACPI: Could not retrieve root port handle\n");
+		return -ENOENT;
+	}
+
+	status = acpi_get_handle(root_handle, method, ret_handle);
+	if (ACPI_FAILURE(status)) {
+		IWL_DEBUG_DEV_RADIO(dev,
+				    "ACPI: %s method not found\n", method);
+		return -ENOENT;
+	}
+	return 0;
+}
+
+void *iwl_acpi_get_object(struct device *dev, acpi_string method)
+{
+	struct acpi_buffer buf = {ACPI_ALLOCATE_BUFFER, NULL};
+	acpi_handle handle;
+	acpi_status status;
+	int ret;
+
+	ret = iwl_acpi_get_handle(dev, method, &handle);
+	if (ret)
+		return ERR_PTR(-ENOENT);
+
+	/* Call the method with no arguments */
+	status = acpi_evaluate_object(handle, NULL, NULL, &buf);
+	if (ACPI_FAILURE(status)) {
+		IWL_DEBUG_DEV_RADIO(dev,
+				    "ACPI: %s method invocation failed (status: 0x%x)\n",
+				    method, status);
+		return ERR_PTR(-ENOENT);
+	}
+	return buf.pointer;
+}
+IWL_EXPORT_SYMBOL(iwl_acpi_get_object);
+
+/*
+ * Generic function for evaluating a method defined in the device specific
+ * method (DSM) interface. The returned acpi object must be freed by calling
+ * function.
+ */
+static void *iwl_acpi_get_dsm_object(struct device *dev, int rev, int func,
+				     union acpi_object *args,
+				     const guid_t *guid)
+{
+	union acpi_object *obj;
+
+	obj = acpi_evaluate_dsm(ACPI_HANDLE(dev), guid, rev, func,
+				args);
+	if (!obj) {
+		IWL_DEBUG_DEV_RADIO(dev,
+				    "ACPI: DSM method invocation failed (rev: %d, func:%d)\n",
+				    rev, func);
+		return ERR_PTR(-ENOENT);
+	}
+	return obj;
+}
+
+/*
+ * Generic function to evaluate a DSM with no arguments
+ * and an integer return value,
+ * (as an integer object or inside a buffer object),
+ * verify and assign the value in the "value" parameter.
+ * return 0 in success and the appropriate errno otherwise.
+ */
+static int iwl_acpi_get_dsm_integer(struct device *dev, int rev, int func,
+				    const guid_t *guid, u64 *value,
+				    size_t expected_size)
+{
+	union acpi_object *obj;
+	int ret = 0;
+
+	obj = iwl_acpi_get_dsm_object(dev, rev, func, NULL, guid);
+	if (IS_ERR(obj)) {
+		IWL_DEBUG_DEV_RADIO(dev,
+				    "Failed to get  DSM object. func= %d\n",
+				    func);
+		return -ENOENT;
+	}
+
+	if (obj->type == ACPI_TYPE_INTEGER) {
+		*value = obj->integer.value;
+	} else if (obj->type == ACPI_TYPE_BUFFER) {
+		__le64 le_value = 0;
+
+		if (WARN_ON_ONCE(expected_size > sizeof(le_value)))
+			return -EINVAL;
+
+		/* if the buffer size doesn't match the expected size */
+		if (obj->buffer.length != expected_size)
+			IWL_DEBUG_DEV_RADIO(dev,
+					    "ACPI: DSM invalid buffer size, padding or truncating (%d)\n",
+					    obj->buffer.length);
+
+		 /* assuming LE from Intel BIOS spec */
+		memcpy(&le_value, obj->buffer.pointer,
+		       min_t(size_t, expected_size, (size_t)obj->buffer.length));
+		*value = le64_to_cpu(le_value);
+	} else {
+		IWL_DEBUG_DEV_RADIO(dev,
+				    "ACPI: DSM method did not return a valid object, type=%d\n",
+				    obj->type);
+		ret = -EINVAL;
+		goto out;
+	}
+
+	IWL_DEBUG_DEV_RADIO(dev,
+			    "ACPI: DSM method evaluated: func=%d, ret=%d\n",
+			    func, ret);
+out:
+	ACPI_FREE(obj);
+	return ret;
+}
+
+/*
+ * Evaluate a DSM with no arguments and a u8 return value,
+ */
+int iwl_acpi_get_dsm_u8(struct device *dev, int rev, int func,
+			const guid_t *guid, u8 *value)
+{
+	int ret;
+	u64 val;
+
+	ret = iwl_acpi_get_dsm_integer(dev, rev, func,
+				       guid, &val, sizeof(u8));
+
+	if (ret < 0)
+		return ret;
+
+	/* cast val (u64) to be u8 */
+	*value = (u8)val;
+	return 0;
+}
+IWL_EXPORT_SYMBOL(iwl_acpi_get_dsm_u8);
+
+/*
+ * Evaluate a DSM with no arguments and a u32 return value,
+ */
+int iwl_acpi_get_dsm_u32(struct device *dev, int rev, int func,
+			 const guid_t *guid, u32 *value)
+{
+	int ret;
+	u64 val;
+
+	ret = iwl_acpi_get_dsm_integer(dev, rev, func,
+				       guid, &val, sizeof(u32));
+
+	if (ret < 0)
+		return ret;
+
+	/* cast val (u64) to be u32 */
+	*value = (u32)val;
+	return 0;
+}
+IWL_EXPORT_SYMBOL(iwl_acpi_get_dsm_u32);
+
+union acpi_object *iwl_acpi_get_wifi_pkg_range(struct device *dev,
+					       union acpi_object *data,
+					       int min_data_size,
+					       int max_data_size,
+					       int *tbl_rev)
+{
+	int i;
+	union acpi_object *wifi_pkg;
+
+	/*
+	 * We need at least one entry in the wifi package that
+	 * describes the domain, and one more entry, otherwise there's
+	 * no point in reading it.
+	 */
+	if (WARN_ON_ONCE(min_data_size < 2 || min_data_size > max_data_size))
+		return ERR_PTR(-EINVAL);
+
+	/*
+	 * We need at least two packages, one for the revision and one
+	 * for the data itself.  Also check that the revision is valid
+	 * (i.e. it is an integer (each caller has to check by itself
+	 * if the returned revision is supported)).
+	 */
+	if (data->type != ACPI_TYPE_PACKAGE ||
+	    data->package.count < 2 ||
+	    data->package.elements[0].type != ACPI_TYPE_INTEGER) {
+		IWL_DEBUG_DEV_RADIO(dev, "Invalid packages structure\n");
+		return ERR_PTR(-EINVAL);
+	}
+
+	*tbl_rev = data->package.elements[0].integer.value;
+
+	/* loop through all the packages to find the one for WiFi */
+	for (i = 1; i < data->package.count; i++) {
+		union acpi_object *domain;
+
+		wifi_pkg = &data->package.elements[i];
+
+		/* skip entries that are not a package with the right size */
+		if (wifi_pkg->type != ACPI_TYPE_PACKAGE ||
+		    wifi_pkg->package.count < min_data_size ||
+		    wifi_pkg->package.count > max_data_size)
+			continue;
+
+		domain = &wifi_pkg->package.elements[0];
+		if (domain->type == ACPI_TYPE_INTEGER &&
+		    domain->integer.value == ACPI_WIFI_DOMAIN)
+			goto found;
+	}
+
+	return ERR_PTR(-ENOENT);
+
+found:
+	return wifi_pkg;
+}
+IWL_EXPORT_SYMBOL(iwl_acpi_get_wifi_pkg_range);
+
+int iwl_acpi_get_tas(struct iwl_fw_runtime *fwrt,
+		     union iwl_tas_config_cmd *cmd, int fw_ver)
+{
+	union acpi_object *wifi_pkg, *data;
+	int ret, tbl_rev, i, block_list_size, enabled;
+
+	data = iwl_acpi_get_object(fwrt->dev, ACPI_WTAS_METHOD);
+	if (IS_ERR(data))
+		return PTR_ERR(data);
+
+	/* try to read wtas table revision 1 or revision 0*/
+	wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,
+					 ACPI_WTAS_WIFI_DATA_SIZE,
+					 &tbl_rev);
+	if (IS_ERR(wifi_pkg)) {
+		ret = PTR_ERR(wifi_pkg);
+		goto out_free;
+	}
+
+	if (tbl_rev == 1 && wifi_pkg->package.elements[1].type ==
+		ACPI_TYPE_INTEGER) {
+		u32 tas_selection =
+			(u32)wifi_pkg->package.elements[1].integer.value;
+		u16 override_iec =
+			(tas_selection & ACPI_WTAS_OVERRIDE_IEC_MSK) >> ACPI_WTAS_OVERRIDE_IEC_POS;
+		u16 enabled_iec = (tas_selection & ACPI_WTAS_ENABLE_IEC_MSK) >>
+			ACPI_WTAS_ENABLE_IEC_POS;
+		u8 usa_tas_uhb = (tas_selection & ACPI_WTAS_USA_UHB_MSK) >> ACPI_WTAS_USA_UHB_POS;
+
+
+		enabled = tas_selection & ACPI_WTAS_ENABLED_MSK;
+		if (fw_ver <= 3) {
+			cmd->v3.override_tas_iec = cpu_to_le16(override_iec);
+			cmd->v3.enable_tas_iec = cpu_to_le16(enabled_iec);
+		} else {
+			cmd->v4.usa_tas_uhb_allowed = usa_tas_uhb;
+			cmd->v4.override_tas_iec = (u8)override_iec;
+			cmd->v4.enable_tas_iec = (u8)enabled_iec;
+		}
+
+	} else if (tbl_rev == 0 &&
+		wifi_pkg->package.elements[1].type == ACPI_TYPE_INTEGER) {
+		enabled = !!wifi_pkg->package.elements[1].integer.value;
+	} else {
+		ret = -EINVAL;
+		goto out_free;
+	}
+
+	if (!enabled) {
+		IWL_DEBUG_RADIO(fwrt, "TAS not enabled\n");
+		ret = 0;
+		goto out_free;
+	}
+
+	IWL_DEBUG_RADIO(fwrt, "Reading TAS table revision %d\n", tbl_rev);
+	if (wifi_pkg->package.elements[2].type != ACPI_TYPE_INTEGER ||
+	    wifi_pkg->package.elements[2].integer.value >
+	    APCI_WTAS_BLACK_LIST_MAX) {
+		IWL_DEBUG_RADIO(fwrt, "TAS invalid array size %llu\n",
+				wifi_pkg->package.elements[2].integer.value);
+		ret = -EINVAL;
+		goto out_free;
+	}
+	block_list_size = wifi_pkg->package.elements[2].integer.value;
+	cmd->v4.block_list_size = cpu_to_le32(block_list_size);
+
+	IWL_DEBUG_RADIO(fwrt, "TAS array size %u\n", block_list_size);
+	if (block_list_size > APCI_WTAS_BLACK_LIST_MAX) {
+		IWL_DEBUG_RADIO(fwrt, "TAS invalid array size value %u\n",
+				block_list_size);
+		ret = -EINVAL;
+		goto out_free;
+	}
+
+	for (i = 0; i < block_list_size; i++) {
+		u32 country;
+
+		if (wifi_pkg->package.elements[3 + i].type !=
+		    ACPI_TYPE_INTEGER) {
+			IWL_DEBUG_RADIO(fwrt,
+					"TAS invalid array elem %d\n", 3 + i);
+			ret = -EINVAL;
+			goto out_free;
+		}
+
+		country = wifi_pkg->package.elements[3 + i].integer.value;
+		cmd->v4.block_list_array[i] = cpu_to_le32(country);
+		IWL_DEBUG_RADIO(fwrt, "TAS block list country %d\n", country);
+	}
+
+	ret = 1;
+out_free:
+	kfree(data);
+	return ret;
+}
+IWL_EXPORT_SYMBOL(iwl_acpi_get_tas);
+
+int iwl_acpi_get_mcc(struct device *dev, char *mcc)
+{
+	union acpi_object *wifi_pkg, *data;
+	u32 mcc_val;
+	int ret, tbl_rev;
+
+	data = iwl_acpi_get_object(dev, ACPI_WRDD_METHOD);
+	if (IS_ERR(data))
+		return PTR_ERR(data);
+
+	wifi_pkg = iwl_acpi_get_wifi_pkg(dev, data, ACPI_WRDD_WIFI_DATA_SIZE,
+					 &tbl_rev);
+	if (IS_ERR(wifi_pkg)) {
+		ret = PTR_ERR(wifi_pkg);
+		goto out_free;
+	}
+
+	if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER ||
+	    tbl_rev != 0) {
+		ret = -EINVAL;
+		goto out_free;
+	}
+
+	mcc_val = wifi_pkg->package.elements[1].integer.value;
+
+	mcc[0] = (mcc_val >> 8) & 0xff;
+	mcc[1] = mcc_val & 0xff;
+	mcc[2] = '\0';
+
+	ret = 0;
+out_free:
+	kfree(data);
+	return ret;
+}
+IWL_EXPORT_SYMBOL(iwl_acpi_get_mcc);
+
+u64 iwl_acpi_get_pwr_limit(struct device *dev)
+{
+	union acpi_object *data, *wifi_pkg;
+	u64 dflt_pwr_limit;
+	int tbl_rev;
+
+	data = iwl_acpi_get_object(dev, ACPI_SPLC_METHOD);
+	if (IS_ERR(data)) {
+		dflt_pwr_limit = 0;
+		goto out;
+	}
+
+	wifi_pkg = iwl_acpi_get_wifi_pkg(dev, data,
+					 ACPI_SPLC_WIFI_DATA_SIZE, &tbl_rev);
+	if (IS_ERR(wifi_pkg) || tbl_rev != 0 ||
+	    wifi_pkg->package.elements[1].integer.value != ACPI_TYPE_INTEGER) {
+		dflt_pwr_limit = 0;
+		goto out_free;
+	}
+
+	dflt_pwr_limit = wifi_pkg->package.elements[1].integer.value;
+out_free:
+	kfree(data);
+out:
+	return dflt_pwr_limit;
+}
+IWL_EXPORT_SYMBOL(iwl_acpi_get_pwr_limit);
+
+int iwl_acpi_get_eckv(struct device *dev, u32 *extl_clk)
+{
+	union acpi_object *wifi_pkg, *data;
+	int ret, tbl_rev;
+
+	data = iwl_acpi_get_object(dev, ACPI_ECKV_METHOD);
+	if (IS_ERR(data))
+		return PTR_ERR(data);
+
+	wifi_pkg = iwl_acpi_get_wifi_pkg(dev, data, ACPI_ECKV_WIFI_DATA_SIZE,
+					 &tbl_rev);
+	if (IS_ERR(wifi_pkg)) {
+		ret = PTR_ERR(wifi_pkg);
+		goto out_free;
+	}
+
+	if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER ||
+	    tbl_rev != 0) {
+		ret = -EINVAL;
+		goto out_free;
+	}
+
+	*extl_clk = wifi_pkg->package.elements[1].integer.value;
+
+	ret = 0;
+
+out_free:
+	kfree(data);
+	return ret;
+}
+IWL_EXPORT_SYMBOL(iwl_acpi_get_eckv);
+
+static int iwl_sar_set_profile(union acpi_object *table,
+			       struct iwl_sar_profile *profile,
+			       bool enabled, u8 num_chains, u8 num_sub_bands)
+{
+	int i, j, idx = 0;
+
+	/*
+	 * The table from ACPI is flat, but we store it in a
+	 * structured array.
+	 */
+	for (i = 0; i < ACPI_SAR_NUM_CHAINS_REV2; i++) {
+		for (j = 0; j < ACPI_SAR_NUM_SUB_BANDS_REV2; j++) {
+			/* if we don't have the values, use the default */
+			if (i >= num_chains || j >= num_sub_bands) {
+				profile->chains[i].subbands[j] = 0;
+			} else {
+				if (table[idx].type != ACPI_TYPE_INTEGER ||
+				    table[idx].integer.value > U8_MAX)
+					return -EINVAL;
+
+				profile->chains[i].subbands[j] =
+					table[idx].integer.value;
+
+				idx++;
+			}
+		}
+	}
+
+	/* Only if all values were valid can the profile be enabled */
+	profile->enabled = enabled;
+
+	return 0;
+}
+
+static int iwl_sar_fill_table(struct iwl_fw_runtime *fwrt,
+			      __le16 *per_chain, u32 n_subbands,
+			      int prof_a, int prof_b)
+{
+	int profs[ACPI_SAR_NUM_CHAINS_REV0] = { prof_a, prof_b };
+	int i, j;
+
+	for (i = 0; i < ACPI_SAR_NUM_CHAINS_REV0; i++) {
+		struct iwl_sar_profile *prof;
+
+		/* don't allow SAR to be disabled (profile 0 means disable) */
+		if (profs[i] == 0)
+			return -EPERM;
+
+		/* we are off by one, so allow up to ACPI_SAR_PROFILE_NUM */
+		if (profs[i] > ACPI_SAR_PROFILE_NUM)
+			return -EINVAL;
+
+		/* profiles go from 1 to 4, so decrement to access the array */
+		prof = &fwrt->sar_profiles[profs[i] - 1];
+
+		/* if the profile is disabled, do nothing */
+		if (!prof->enabled) {
+			IWL_DEBUG_RADIO(fwrt, "SAR profile %d is disabled.\n",
+					profs[i]);
+			/*
+			 * if one of the profiles is disabled, we
+			 * ignore all of them and return 1 to
+			 * differentiate disabled from other failures.
+			 */
+			return 1;
+		}
+
+		IWL_DEBUG_INFO(fwrt,
+			       "SAR EWRD: chain %d profile index %d\n",
+			       i, profs[i]);
+		IWL_DEBUG_RADIO(fwrt, "  Chain[%d]:\n", i);
+		for (j = 0; j < n_subbands; j++) {
+			per_chain[i * n_subbands + j] =
+				cpu_to_le16(prof->chains[i].subbands[j]);
+			IWL_DEBUG_RADIO(fwrt, "    Band[%d] = %d * .125dBm\n",
+					j, prof->chains[i].subbands[j]);
+		}
+	}
+
+	return 0;
+}
+
+int iwl_sar_select_profile(struct iwl_fw_runtime *fwrt,
+			   __le16 *per_chain, u32 n_tables, u32 n_subbands,
+			   int prof_a, int prof_b)
+{
+	int i, ret = 0;
+
+	for (i = 0; i < n_tables; i++) {
+		ret = iwl_sar_fill_table(fwrt,
+			 &per_chain[i * n_subbands * ACPI_SAR_NUM_CHAINS_REV0],
+			 n_subbands, prof_a, prof_b);
+		if (ret)
+			break;
+	}
+
+	return ret;
+}
+IWL_EXPORT_SYMBOL(iwl_sar_select_profile);
+
+int iwl_sar_get_wrds_table(struct iwl_fw_runtime *fwrt)
+{
+	union acpi_object *wifi_pkg, *table, *data;
+	int ret, tbl_rev;
+	u32 flags;
+	u8 num_chains, num_sub_bands;
+
+	data = iwl_acpi_get_object(fwrt->dev, ACPI_WRDS_METHOD);
+	if (IS_ERR(data))
+		return PTR_ERR(data);
+
+	/* start by trying to read revision 2 */
+	wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,
+					 ACPI_WRDS_WIFI_DATA_SIZE_REV2,
+					 &tbl_rev);
+	if (!IS_ERR(wifi_pkg)) {
+		if (tbl_rev != 2) {
+			ret = PTR_ERR(wifi_pkg);
+			goto out_free;
+		}
+
+		num_chains = ACPI_SAR_NUM_CHAINS_REV2;
+		num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV2;
+
+		goto read_table;
+	}
+
+	/* then try revision 1 */
+	wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,
+					 ACPI_WRDS_WIFI_DATA_SIZE_REV1,
+					 &tbl_rev);
+	if (!IS_ERR(wifi_pkg)) {
+		if (tbl_rev != 1) {
+			ret = PTR_ERR(wifi_pkg);
+			goto out_free;
+		}
+
+		num_chains = ACPI_SAR_NUM_CHAINS_REV1;
+		num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV1;
+
+		goto read_table;
+	}
+
+	/* then finally revision 0 */
+	wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,
+					 ACPI_WRDS_WIFI_DATA_SIZE_REV0,
+					 &tbl_rev);
+	if (!IS_ERR(wifi_pkg)) {
+		if (tbl_rev != 0) {
+			ret = PTR_ERR(wifi_pkg);
+			goto out_free;
+		}
+
+		num_chains = ACPI_SAR_NUM_CHAINS_REV0;
+		num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV0;
+
+		goto read_table;
+	}
+
+	ret = PTR_ERR(wifi_pkg);
+	goto out_free;
+
+read_table:
+	if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER) {
+		ret = -EINVAL;
+		goto out_free;
+	}
+
+	IWL_DEBUG_RADIO(fwrt, "Reading WRDS tbl_rev=%d\n", tbl_rev);
+
+	flags = wifi_pkg->package.elements[1].integer.value;
+	fwrt->reduced_power_flags = flags >> IWL_REDUCE_POWER_FLAGS_POS;
+
+	/* position of the actual table */
+	table = &wifi_pkg->package.elements[2];
+
+	/* The profile from WRDS is officially profile 1, but goes
+	 * into sar_profiles[0] (because we don't have a profile 0).
+	 */
+	ret = iwl_sar_set_profile(table, &fwrt->sar_profiles[0],
+				  flags & IWL_SAR_ENABLE_MSK,
+				  num_chains, num_sub_bands);
+out_free:
+	kfree(data);
+	return ret;
+}
+IWL_EXPORT_SYMBOL(iwl_sar_get_wrds_table);
+
+int iwl_sar_get_ewrd_table(struct iwl_fw_runtime *fwrt)
+{
+	union acpi_object *wifi_pkg, *data;
+	bool enabled;
+	int i, n_profiles, tbl_rev, pos;
+	int ret = 0;
+	u8 num_chains, num_sub_bands;
+
+	data = iwl_acpi_get_object(fwrt->dev, ACPI_EWRD_METHOD);
+	if (IS_ERR(data))
+		return PTR_ERR(data);
+
+	/* start by trying to read revision 2 */
+	wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,
+					 ACPI_EWRD_WIFI_DATA_SIZE_REV2,
+					 &tbl_rev);
+	if (!IS_ERR(wifi_pkg)) {
+		if (tbl_rev != 2) {
+			ret = PTR_ERR(wifi_pkg);
+			goto out_free;
+		}
+
+		num_chains = ACPI_SAR_NUM_CHAINS_REV2;
+		num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV2;
+
+		goto read_table;
+	}
+
+	/* then try revision 1 */
+	wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,
+					 ACPI_EWRD_WIFI_DATA_SIZE_REV1,
+					 &tbl_rev);
+	if (!IS_ERR(wifi_pkg)) {
+		if (tbl_rev != 1) {
+			ret = PTR_ERR(wifi_pkg);
+			goto out_free;
+		}
+
+		num_chains = ACPI_SAR_NUM_CHAINS_REV1;
+		num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV1;
+
+		goto read_table;
+	}
+
+	/* then finally revision 0 */
+	wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,
+					 ACPI_EWRD_WIFI_DATA_SIZE_REV0,
+					 &tbl_rev);
+	if (!IS_ERR(wifi_pkg)) {
+		if (tbl_rev != 0) {
+			ret = PTR_ERR(wifi_pkg);
+			goto out_free;
+		}
+
+		num_chains = ACPI_SAR_NUM_CHAINS_REV0;
+		num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV0;
+
+		goto read_table;
+	}
+
+	ret = PTR_ERR(wifi_pkg);
+	goto out_free;
+
+read_table:
+	if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER ||
+	    wifi_pkg->package.elements[2].type != ACPI_TYPE_INTEGER) {
+		ret = -EINVAL;
+		goto out_free;
+	}
+
+	enabled = !!(wifi_pkg->package.elements[1].integer.value);
+	n_profiles = wifi_pkg->package.elements[2].integer.value;
+
+	/*
+	 * Check the validity of n_profiles.  The EWRD profiles start
+	 * from index 1, so the maximum value allowed here is
+	 * ACPI_SAR_PROFILES_NUM - 1.
+	 */
+	if (n_profiles <= 0 || n_profiles >= ACPI_SAR_PROFILE_NUM) {
+		ret = -EINVAL;
+		goto out_free;
+	}
+
+	/* the tables start at element 3 */
+	pos = 3;
+
+	for (i = 0; i < n_profiles; i++) {
+		/* The EWRD profiles officially go from 2 to 4, but we
+		 * save them in sar_profiles[1-3] (because we don't
+		 * have profile 0).  So in the array we start from 1.
+		 */
+		ret = iwl_sar_set_profile(&wifi_pkg->package.elements[pos],
+					  &fwrt->sar_profiles[i + 1], enabled,
+					  num_chains, num_sub_bands);
+		if (ret < 0)
+			break;
+
+		/* go to the next table */
+		pos += num_chains * num_sub_bands;
+	}
+
+out_free:
+	kfree(data);
+	return ret;
+}
+IWL_EXPORT_SYMBOL(iwl_sar_get_ewrd_table);
+
+int iwl_sar_get_wgds_table(struct iwl_fw_runtime *fwrt)
+{
+	union acpi_object *wifi_pkg, *data;
+	int i, j, k, ret, tbl_rev;
+	u8 num_bands, num_profiles;
+	static const struct {
+		u8 revisions;
+		u8 bands;
+		u8 profiles;
+		u8 min_profiles;
+	} rev_data[] = {
+		{
+			.revisions = BIT(3),
+			.bands = ACPI_GEO_NUM_BANDS_REV2,
+			.profiles = ACPI_NUM_GEO_PROFILES_REV3,
+			.min_profiles = 3,
+		},
+		{
+			.revisions = BIT(2),
+			.bands = ACPI_GEO_NUM_BANDS_REV2,
+			.profiles = ACPI_NUM_GEO_PROFILES,
+		},
+		{
+			.revisions = BIT(0) | BIT(1),
+			.bands = ACPI_GEO_NUM_BANDS_REV0,
+			.profiles = ACPI_NUM_GEO_PROFILES,
+		},
+	};
+	int idx;
+	/* start from one to skip the domain */
+	int entry_idx = 1;
+
+	BUILD_BUG_ON(ACPI_NUM_GEO_PROFILES_REV3 != IWL_NUM_GEO_PROFILES_V3);
+	BUILD_BUG_ON(ACPI_NUM_GEO_PROFILES != IWL_NUM_GEO_PROFILES);
+
+	data = iwl_acpi_get_object(fwrt->dev, ACPI_WGDS_METHOD);
+	if (IS_ERR(data))
+		return PTR_ERR(data);
+
+	/* read the highest revision we understand first */
+	for (idx = 0; idx < ARRAY_SIZE(rev_data); idx++) {
+		/* min_profiles != 0 requires num_profiles header */
+		u32 hdr_size = 1 + !!rev_data[idx].min_profiles;
+		u32 profile_size = ACPI_GEO_PER_CHAIN_SIZE *
+				   rev_data[idx].bands;
+		u32 max_size = hdr_size + profile_size * rev_data[idx].profiles;
+		u32 min_size;
+
+		if (!rev_data[idx].min_profiles)
+			min_size = max_size;
+		else
+			min_size = hdr_size +
+				   profile_size * rev_data[idx].min_profiles;
+
+		wifi_pkg = iwl_acpi_get_wifi_pkg_range(fwrt->dev, data,
+						       min_size, max_size,
+						       &tbl_rev);
+		if (!IS_ERR(wifi_pkg)) {
+			if (!(BIT(tbl_rev) & rev_data[idx].revisions))
+				continue;
+
+			num_bands = rev_data[idx].bands;
+			num_profiles = rev_data[idx].profiles;
+
+			if (rev_data[idx].min_profiles) {
+				/* read header that says # of profiles */
+				union acpi_object *entry;
+
+				entry = &wifi_pkg->package.elements[entry_idx];
+				entry_idx++;
+				if (entry->type != ACPI_TYPE_INTEGER ||
+				    entry->integer.value > num_profiles) {
+					ret = -EINVAL;
+					goto out_free;
+				}
+				num_profiles = entry->integer.value;
+
+				/*
+				 * this also validates >= min_profiles since we
+				 * otherwise wouldn't have gotten the data when
+				 * looking up in ACPI
+				 */
+				if (wifi_pkg->package.count !=
+				    hdr_size + profile_size * num_profiles) {
+					ret = -EINVAL;
+					goto out_free;
+				}
+			}
+			goto read_table;
+		}
+	}
+
+	if (idx < ARRAY_SIZE(rev_data))
+		ret = PTR_ERR(wifi_pkg);
+	else
+		ret = -ENOENT;
+	goto out_free;
+
+read_table:
+	fwrt->geo_rev = tbl_rev;
+	for (i = 0; i < num_profiles; i++) {
+		for (j = 0; j < ACPI_GEO_NUM_BANDS_REV2; j++) {
+			union acpi_object *entry;
+
+			/*
+			 * num_bands is either 2 or 3, if it's only 2 then
+			 * fill the third band (6 GHz) with the values from
+			 * 5 GHz (second band)
+			 */
+			if (j >= num_bands) {
+				fwrt->geo_profiles[i].bands[j].max =
+					fwrt->geo_profiles[i].bands[1].max;
+			} else {
+				entry = &wifi_pkg->package.elements[entry_idx];
+				entry_idx++;
+				if (entry->type != ACPI_TYPE_INTEGER ||
+				    entry->integer.value > U8_MAX) {
+					ret = -EINVAL;
+					goto out_free;
+				}
+
+				fwrt->geo_profiles[i].bands[j].max =
+					entry->integer.value;
+			}
+
+			for (k = 0; k < ACPI_GEO_NUM_CHAINS; k++) {
+				/* same here as above */
+				if (j >= num_bands) {
+					fwrt->geo_profiles[i].bands[j].chains[k] =
+						fwrt->geo_profiles[i].bands[1].chains[k];
+				} else {
+					entry = &wifi_pkg->package.elements[entry_idx];
+					entry_idx++;
+					if (entry->type != ACPI_TYPE_INTEGER ||
+					    entry->integer.value > U8_MAX) {
+						ret = -EINVAL;
+						goto out_free;
+					}
+
+					fwrt->geo_profiles[i].bands[j].chains[k] =
+						entry->integer.value;
+				}
+			}
+		}
+	}
+
+	fwrt->geo_num_profiles = num_profiles;
+	fwrt->geo_enabled = true;
+	ret = 0;
+out_free:
+	kfree(data);
+	return ret;
+}
+IWL_EXPORT_SYMBOL(iwl_sar_get_wgds_table);
+
+bool iwl_sar_geo_support(struct iwl_fw_runtime *fwrt)
+{
+	/*
+	 * The PER_CHAIN_LIMIT_OFFSET_CMD command is not supported on
+	 * earlier firmware versions.  Unfortunately, we don't have a
+	 * TLV API flag to rely on, so rely on the major version which
+	 * is in the first byte of ucode_ver.  This was implemented
+	 * initially on version 38 and then backported to 17.  It was
+	 * also backported to 29, but only for 7265D devices.  The
+	 * intention was to have it in 36 as well, but not all 8000
+	 * family got this feature enabled.  The 8000 family is the
+	 * only one using version 36, so skip this version entirely.
+	 */
+	return IWL_UCODE_SERIAL(fwrt->fw->ucode_ver) >= 38 ||
+		(IWL_UCODE_SERIAL(fwrt->fw->ucode_ver) == 17 &&
+		 fwrt->trans->hw_rev != CSR_HW_REV_TYPE_3160) ||
+		(IWL_UCODE_SERIAL(fwrt->fw->ucode_ver) == 29 &&
+		 ((fwrt->trans->hw_rev & CSR_HW_REV_TYPE_MSK) ==
+		  CSR_HW_REV_TYPE_7265D));
+}
+IWL_EXPORT_SYMBOL(iwl_sar_geo_support);
+
+int iwl_sar_geo_init(struct iwl_fw_runtime *fwrt,
+		     struct iwl_per_chain_offset *table,
+		     u32 n_bands, u32 n_profiles)
+{
+	int i, j;
+
+	if (!fwrt->geo_enabled)
+		return -ENODATA;
+
+	if (!iwl_sar_geo_support(fwrt))
+		return -EOPNOTSUPP;
+
+	for (i = 0; i < n_profiles; i++) {
+		for (j = 0; j < n_bands; j++) {
+			struct iwl_per_chain_offset *chain =
+				&table[i * n_bands + j];
+
+			chain->max_tx_power =
+				cpu_to_le16(fwrt->geo_profiles[i].bands[j].max);
+			chain->chain_a = fwrt->geo_profiles[i].bands[j].chains[0];
+			chain->chain_b = fwrt->geo_profiles[i].bands[j].chains[1];
+			IWL_DEBUG_RADIO(fwrt,
+					"SAR geographic profile[%d] Band[%d]: chain A = %d chain B = %d max_tx_power = %d\n",
+					i, j,
+					fwrt->geo_profiles[i].bands[j].chains[0],
+					fwrt->geo_profiles[i].bands[j].chains[1],
+					fwrt->geo_profiles[i].bands[j].max);
+		}
+	}
+
+	return 0;
+}
+IWL_EXPORT_SYMBOL(iwl_sar_geo_init);
+
+__le32 iwl_acpi_get_lari_config_bitmap(struct iwl_fw_runtime *fwrt)
+{
+	int ret;
+	u8 value;
+	__le32 config_bitmap = 0;
+
+	/*
+	 ** Evaluate func 'DSM_FUNC_ENABLE_INDONESIA_5G2'
+	 */
+	ret = iwl_acpi_get_dsm_u8(fwrt->dev, 0,
+				  DSM_FUNC_ENABLE_INDONESIA_5G2,
+				  &iwl_guid, &value);
+
+	if (!ret && value == DSM_VALUE_INDONESIA_ENABLE)
+		config_bitmap |=
+			cpu_to_le32(LARI_CONFIG_ENABLE_5G2_IN_INDONESIA_MSK);
+
+	/*
+	 ** Evaluate func 'DSM_FUNC_DISABLE_SRD'
+	 */
+	ret = iwl_acpi_get_dsm_u8(fwrt->dev, 0,
+				  DSM_FUNC_DISABLE_SRD,
+				  &iwl_guid, &value);
+	if (!ret) {
+		if (value == DSM_VALUE_SRD_PASSIVE)
+			config_bitmap |=
+				cpu_to_le32(LARI_CONFIG_CHANGE_ETSI_TO_PASSIVE_MSK);
+		else if (value == DSM_VALUE_SRD_DISABLE)
+			config_bitmap |=
+				cpu_to_le32(LARI_CONFIG_CHANGE_ETSI_TO_DISABLED_MSK);
+	}
+
+	return config_bitmap;
+}
+IWL_EXPORT_SYMBOL(iwl_acpi_get_lari_config_bitmap);
+
+int iwl_acpi_get_ppag_table(struct iwl_fw_runtime *fwrt)
+{
+	union acpi_object *wifi_pkg, *data, *flags;
+	int i, j, ret, tbl_rev, num_sub_bands = 0;
+	int idx = 2;
+
+	fwrt->ppag_flags = 0;
+
+	data = iwl_acpi_get_object(fwrt->dev, ACPI_PPAG_METHOD);
+	if (IS_ERR(data))
+		return PTR_ERR(data);
+
+	/* try to read ppag table rev 2 or 1 (both have the same data size) */
+	wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,
+				ACPI_PPAG_WIFI_DATA_SIZE_V2, &tbl_rev);
+
+	if (!IS_ERR(wifi_pkg)) {
+		if (tbl_rev == 1 || tbl_rev == 2) {
+			num_sub_bands = IWL_NUM_SUB_BANDS_V2;
+			IWL_DEBUG_RADIO(fwrt,
+					"Reading PPAG table v2 (tbl_rev=%d)\n",
+					tbl_rev);
+			goto read_table;
+		} else {
+			ret = -EINVAL;
+			goto out_free;
+		}
+	}
+
+	/* try to read ppag table revision 0 */
+	wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,
+			ACPI_PPAG_WIFI_DATA_SIZE_V1, &tbl_rev);
+
+	if (!IS_ERR(wifi_pkg)) {
+		if (tbl_rev != 0) {
+			ret = -EINVAL;
+			goto out_free;
+		}
+		num_sub_bands = IWL_NUM_SUB_BANDS_V1;
+		IWL_DEBUG_RADIO(fwrt, "Reading PPAG table v1 (tbl_rev=0)\n");
+		goto read_table;
+	}
+
+read_table:
+	fwrt->ppag_ver = tbl_rev;
+	flags = &wifi_pkg->package.elements[1];
+
+	if (flags->type != ACPI_TYPE_INTEGER) {
+		ret = -EINVAL;
+		goto out_free;
+	}
+
+	fwrt->ppag_flags = flags->integer.value & ACPI_PPAG_MASK;
+
+	if (!fwrt->ppag_flags) {
+		ret = 0;
+		goto out_free;
+	}
+
+	/*
+	 * read, verify gain values and save them into the PPAG table.
+	 * first sub-band (j=0) corresponds to Low-Band (2.4GHz), and the
+	 * following sub-bands to High-Band (5GHz).
+	 */
+	for (i = 0; i < IWL_NUM_CHAIN_LIMITS; i++) {
+		for (j = 0; j < num_sub_bands; j++) {
+			union acpi_object *ent;
+
+			ent = &wifi_pkg->package.elements[idx++];
+			if (ent->type != ACPI_TYPE_INTEGER) {
+				ret = -EINVAL;
+				goto out_free;
+			}
+
+			fwrt->ppag_chains[i].subbands[j] = ent->integer.value;
+
+			if ((j == 0 &&
+				(fwrt->ppag_chains[i].subbands[j] > ACPI_PPAG_MAX_LB ||
+				 fwrt->ppag_chains[i].subbands[j] < ACPI_PPAG_MIN_LB)) ||
+				(j != 0 &&
+				(fwrt->ppag_chains[i].subbands[j] > ACPI_PPAG_MAX_HB ||
+				fwrt->ppag_chains[i].subbands[j] < ACPI_PPAG_MIN_HB))) {
+					fwrt->ppag_flags = 0;
+					ret = -EINVAL;
+					goto out_free;
+				}
+		}
+	}
+
+
+	ret = 0;
+
+out_free:
+	kfree(data);
+	return ret;
+}
+IWL_EXPORT_SYMBOL(iwl_acpi_get_ppag_table);
+
+int iwl_read_ppag_table(struct iwl_fw_runtime *fwrt, union iwl_ppag_table_cmd *cmd,
+			int *cmd_size)
+{
+        u8 cmd_ver;
+        int i, j, num_sub_bands;
+        s8 *gain;
+
+	/* many firmware images for JF lie about this */
+	if (CSR_HW_RFID_TYPE(fwrt->trans->hw_rf_id) ==
+	    CSR_HW_RFID_TYPE(CSR_HW_RF_ID_TYPE_JF))
+		return -EOPNOTSUPP;
+
+        if (!fw_has_capa(&fwrt->fw->ucode_capa, IWL_UCODE_TLV_CAPA_SET_PPAG)) {
+                IWL_DEBUG_RADIO(fwrt,
+                                "PPAG capability not supported by FW, command not sent.\n");
+                return -EINVAL;
+        }
+        if (!fwrt->ppag_flags) {
+                IWL_DEBUG_RADIO(fwrt, "PPAG not enabled, command not sent.\n");
+                return -EINVAL;
+        }
+
+        /* The 'flags' field is the same in v1 and in v2 so we can just
+         * use v1 to access it.
+         */
+        cmd->v1.flags = cpu_to_le32(fwrt->ppag_flags);
+        cmd_ver = iwl_fw_lookup_cmd_ver(fwrt->fw,
+                                        WIDE_ID(PHY_OPS_GROUP, PER_PLATFORM_ANT_GAIN_CMD),
+                                        IWL_FW_CMD_VER_UNKNOWN);
+	if (cmd_ver == 1) {
+                num_sub_bands = IWL_NUM_SUB_BANDS_V1;
+                gain = cmd->v1.gain[0];
+                *cmd_size = sizeof(cmd->v1);
+                if (fwrt->ppag_ver == 1 || fwrt->ppag_ver == 2) {
+                        IWL_DEBUG_RADIO(fwrt,
+                                        "PPAG table rev is %d but FW supports v1, sending truncated table\n",
+                                        fwrt->ppag_ver);
+                        cmd->v1.flags &= cpu_to_le32(IWL_PPAG_ETSI_MASK);
+		}
+	} else if (cmd_ver == 2 || cmd_ver == 3) {
+                num_sub_bands = IWL_NUM_SUB_BANDS_V2;
+                gain = cmd->v2.gain[0];
+                *cmd_size = sizeof(cmd->v2);
+                if (fwrt->ppag_ver == 0) {
+                        IWL_DEBUG_RADIO(fwrt,
+                                        "PPAG table is v1 but FW supports v2, sending padded table\n");
+                } else if (cmd_ver == 2 && fwrt->ppag_ver == 2) {
+                        IWL_DEBUG_RADIO(fwrt,
+                                        "PPAG table is v3 but FW supports v2, sending partial bitmap.\n");
+                        cmd->v1.flags &= cpu_to_le32(IWL_PPAG_ETSI_MASK);
+                }
+        } else {
+                IWL_DEBUG_RADIO(fwrt, "Unsupported PPAG command version\n");
+                return -EINVAL;
+        }
+
+	for (i = 0; i < IWL_NUM_CHAIN_LIMITS; i++) {
+                for (j = 0; j < num_sub_bands; j++) {
+                        gain[i * num_sub_bands + j] =
+                                fwrt->ppag_chains[i].subbands[j];
+                        IWL_DEBUG_RADIO(fwrt,
+                                        "PPAG table: chain[%d] band[%d]: gain = %d\n",
+                                        i, j, gain[i * num_sub_bands + j]);
+                }
+        }
+
+	return 0;
+}
+IWL_EXPORT_SYMBOL(iwl_read_ppag_table);
+
+bool iwl_acpi_is_ppag_approved(struct iwl_fw_runtime *fwrt)
+{
+
+	if (!dmi_check_system(dmi_ppag_approved_list)) {
+		IWL_DEBUG_RADIO(fwrt,
+			"System vendor '%s' is not in the approved list, disabling PPAG.\n",
+			dmi_get_system_info(DMI_SYS_VENDOR));
+			fwrt->ppag_flags = 0;
+			return false;
+	}
+
+	return true;
+}
+IWL_EXPORT_SYMBOL(iwl_acpi_is_ppag_approved);