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authorLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
committerLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
commit5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch)
treecc5c2d0a898769fd59549594fedb3ee6f84e59a0 /drivers/acpi/acpica/exutils.c
downloadlinux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.tar.gz
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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(). ...
Diffstat (limited to '')
-rw-r--r--drivers/acpi/acpica/exutils.c410
1 files changed, 410 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/exutils.c b/drivers/acpi/acpica/exutils.c
new file mode 100644
index 000000000..87f01ce1c
--- /dev/null
+++ b/drivers/acpi/acpica/exutils.c
@@ -0,0 +1,410 @@
+// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
+/******************************************************************************
+ *
+ * Module Name: exutils - interpreter/scanner utilities
+ *
+ * Copyright (C) 2000 - 2022, Intel Corp.
+ *
+ *****************************************************************************/
+
+/*
+ * DEFINE_AML_GLOBALS is tested in amlcode.h
+ * to determine whether certain global names should be "defined" or only
+ * "declared" in the current compilation. This enhances maintainability
+ * by enabling a single header file to embody all knowledge of the names
+ * in question.
+ *
+ * Exactly one module of any executable should #define DEFINE_GLOBALS
+ * before #including the header files which use this convention. The
+ * names in question will be defined and initialized in that module,
+ * and declared as extern in all other modules which #include those
+ * header files.
+ */
+
+#define DEFINE_AML_GLOBALS
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acinterp.h"
+#include "amlcode.h"
+
+#define _COMPONENT ACPI_EXECUTER
+ACPI_MODULE_NAME("exutils")
+
+/* Local prototypes */
+static u32 acpi_ex_digits_needed(u64 value, u32 base);
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ex_enter_interpreter
+ *
+ * PARAMETERS: None
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Enter the interpreter execution region. Failure to enter
+ * the interpreter region is a fatal system error. Used in
+ * conjunction with exit_interpreter.
+ *
+ ******************************************************************************/
+
+void acpi_ex_enter_interpreter(void)
+{
+ acpi_status status;
+
+ ACPI_FUNCTION_TRACE(ex_enter_interpreter);
+
+ status = acpi_ut_acquire_mutex(ACPI_MTX_INTERPRETER);
+ if (ACPI_FAILURE(status)) {
+ ACPI_ERROR((AE_INFO,
+ "Could not acquire AML Interpreter mutex"));
+ }
+ status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
+ if (ACPI_FAILURE(status)) {
+ ACPI_ERROR((AE_INFO, "Could not acquire AML Namespace mutex"));
+ }
+
+ return_VOID;
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ex_exit_interpreter
+ *
+ * PARAMETERS: None
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Exit the interpreter execution region. This is the top level
+ * routine used to exit the interpreter when all processing has
+ * been completed, or when the method blocks.
+ *
+ * Cases where the interpreter is unlocked internally:
+ * 1) Method will be blocked on a Sleep() AML opcode
+ * 2) Method will be blocked on an Acquire() AML opcode
+ * 3) Method will be blocked on a Wait() AML opcode
+ * 4) Method will be blocked to acquire the global lock
+ * 5) Method will be blocked waiting to execute a serialized control
+ * method that is currently executing
+ * 6) About to invoke a user-installed opregion handler
+ *
+ ******************************************************************************/
+
+void acpi_ex_exit_interpreter(void)
+{
+ acpi_status status;
+
+ ACPI_FUNCTION_TRACE(ex_exit_interpreter);
+
+ status = acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
+ if (ACPI_FAILURE(status)) {
+ ACPI_ERROR((AE_INFO, "Could not release AML Namespace mutex"));
+ }
+ status = acpi_ut_release_mutex(ACPI_MTX_INTERPRETER);
+ if (ACPI_FAILURE(status)) {
+ ACPI_ERROR((AE_INFO,
+ "Could not release AML Interpreter mutex"));
+ }
+
+ return_VOID;
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ex_truncate_for32bit_table
+ *
+ * PARAMETERS: obj_desc - Object to be truncated
+ *
+ * RETURN: TRUE if a truncation was performed, FALSE otherwise.
+ *
+ * DESCRIPTION: Truncate an ACPI Integer to 32 bits if the execution mode is
+ * 32-bit, as determined by the revision of the DSDT.
+ *
+ ******************************************************************************/
+
+u8 acpi_ex_truncate_for32bit_table(union acpi_operand_object *obj_desc)
+{
+
+ ACPI_FUNCTION_ENTRY();
+
+ /*
+ * Object must be a valid number and we must be executing
+ * a control method. Object could be NS node for AML_INT_NAMEPATH_OP.
+ */
+ if ((!obj_desc) ||
+ (ACPI_GET_DESCRIPTOR_TYPE(obj_desc) != ACPI_DESC_TYPE_OPERAND) ||
+ (obj_desc->common.type != ACPI_TYPE_INTEGER)) {
+ return (FALSE);
+ }
+
+ if ((acpi_gbl_integer_byte_width == 4) &&
+ (obj_desc->integer.value > (u64)ACPI_UINT32_MAX)) {
+ /*
+ * We are executing in a 32-bit ACPI table. Truncate
+ * the value to 32 bits by zeroing out the upper 32-bit field
+ */
+ obj_desc->integer.value &= (u64)ACPI_UINT32_MAX;
+ return (TRUE);
+ }
+
+ return (FALSE);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ex_acquire_global_lock
+ *
+ * PARAMETERS: field_flags - Flags with Lock rule:
+ * always_lock or never_lock
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Obtain the ACPI hardware Global Lock, only if the field
+ * flags specify that it is to be obtained before field access.
+ *
+ ******************************************************************************/
+
+void acpi_ex_acquire_global_lock(u32 field_flags)
+{
+ acpi_status status;
+
+ ACPI_FUNCTION_TRACE(ex_acquire_global_lock);
+
+ /* Only use the lock if the always_lock bit is set */
+
+ if (!(field_flags & AML_FIELD_LOCK_RULE_MASK)) {
+ return_VOID;
+ }
+
+ /* Attempt to get the global lock, wait forever */
+
+ status = acpi_ex_acquire_mutex_object(ACPI_WAIT_FOREVER,
+ acpi_gbl_global_lock_mutex,
+ acpi_os_get_thread_id());
+
+ if (ACPI_FAILURE(status)) {
+ ACPI_EXCEPTION((AE_INFO, status,
+ "Could not acquire Global Lock"));
+ }
+
+ return_VOID;
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ex_release_global_lock
+ *
+ * PARAMETERS: field_flags - Flags with Lock rule:
+ * always_lock or never_lock
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Release the ACPI hardware Global Lock
+ *
+ ******************************************************************************/
+
+void acpi_ex_release_global_lock(u32 field_flags)
+{
+ acpi_status status;
+
+ ACPI_FUNCTION_TRACE(ex_release_global_lock);
+
+ /* Only use the lock if the always_lock bit is set */
+
+ if (!(field_flags & AML_FIELD_LOCK_RULE_MASK)) {
+ return_VOID;
+ }
+
+ /* Release the global lock */
+
+ status = acpi_ex_release_mutex_object(acpi_gbl_global_lock_mutex);
+ if (ACPI_FAILURE(status)) {
+
+ /* Report the error, but there isn't much else we can do */
+
+ ACPI_EXCEPTION((AE_INFO, status,
+ "Could not release Global Lock"));
+ }
+
+ return_VOID;
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ex_digits_needed
+ *
+ * PARAMETERS: value - Value to be represented
+ * base - Base of representation
+ *
+ * RETURN: The number of digits.
+ *
+ * DESCRIPTION: Calculate the number of digits needed to represent the Value
+ * in the given Base (Radix)
+ *
+ ******************************************************************************/
+
+static u32 acpi_ex_digits_needed(u64 value, u32 base)
+{
+ u32 num_digits;
+ u64 current_value;
+
+ ACPI_FUNCTION_TRACE(ex_digits_needed);
+
+ /* u64 is unsigned, so we don't worry about a '-' prefix */
+
+ if (value == 0) {
+ return_UINT32(1);
+ }
+
+ current_value = value;
+ num_digits = 0;
+
+ /* Count the digits in the requested base */
+
+ while (current_value) {
+ (void)acpi_ut_short_divide(current_value, base, &current_value,
+ NULL);
+ num_digits++;
+ }
+
+ return_UINT32(num_digits);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ex_eisa_id_to_string
+ *
+ * PARAMETERS: out_string - Where to put the converted string (8 bytes)
+ * compressed_id - EISAID to be converted
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Convert a numeric EISAID to string representation. Return
+ * buffer must be large enough to hold the string. The string
+ * returned is always exactly of length ACPI_EISAID_STRING_SIZE
+ * (includes null terminator). The EISAID is always 32 bits.
+ *
+ ******************************************************************************/
+
+void acpi_ex_eisa_id_to_string(char *out_string, u64 compressed_id)
+{
+ u32 swapped_id;
+
+ ACPI_FUNCTION_ENTRY();
+
+ /* The EISAID should be a 32-bit integer */
+
+ if (compressed_id > ACPI_UINT32_MAX) {
+ ACPI_WARNING((AE_INFO,
+ "Expected EISAID is larger than 32 bits: "
+ "0x%8.8X%8.8X, truncating",
+ ACPI_FORMAT_UINT64(compressed_id)));
+ }
+
+ /* Swap ID to big-endian to get contiguous bits */
+
+ swapped_id = acpi_ut_dword_byte_swap((u32)compressed_id);
+
+ /* First 3 bytes are uppercase letters. Next 4 bytes are hexadecimal */
+
+ out_string[0] =
+ (char)(0x40 + (((unsigned long)swapped_id >> 26) & 0x1F));
+ out_string[1] = (char)(0x40 + ((swapped_id >> 21) & 0x1F));
+ out_string[2] = (char)(0x40 + ((swapped_id >> 16) & 0x1F));
+ out_string[3] = acpi_ut_hex_to_ascii_char((u64) swapped_id, 12);
+ out_string[4] = acpi_ut_hex_to_ascii_char((u64) swapped_id, 8);
+ out_string[5] = acpi_ut_hex_to_ascii_char((u64) swapped_id, 4);
+ out_string[6] = acpi_ut_hex_to_ascii_char((u64) swapped_id, 0);
+ out_string[7] = 0;
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ex_integer_to_string
+ *
+ * PARAMETERS: out_string - Where to put the converted string. At least
+ * 21 bytes are needed to hold the largest
+ * possible 64-bit integer.
+ * value - Value to be converted
+ *
+ * RETURN: Converted string in out_string
+ *
+ * DESCRIPTION: Convert a 64-bit integer to decimal string representation.
+ * Assumes string buffer is large enough to hold the string. The
+ * largest string is (ACPI_MAX64_DECIMAL_DIGITS + 1).
+ *
+ ******************************************************************************/
+
+void acpi_ex_integer_to_string(char *out_string, u64 value)
+{
+ u32 count;
+ u32 digits_needed;
+ u32 remainder;
+
+ ACPI_FUNCTION_ENTRY();
+
+ digits_needed = acpi_ex_digits_needed(value, 10);
+ out_string[digits_needed] = 0;
+
+ for (count = digits_needed; count > 0; count--) {
+ (void)acpi_ut_short_divide(value, 10, &value, &remainder);
+ out_string[count - 1] = (char)('0' + remainder);
+ }
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ex_pci_cls_to_string
+ *
+ * PARAMETERS: out_string - Where to put the converted string (7 bytes)
+ * class_code - PCI class code to be converted (3 bytes)
+ *
+ * RETURN: Converted string in out_string
+ *
+ * DESCRIPTION: Convert 3-bytes PCI class code to string representation.
+ * Return buffer must be large enough to hold the string. The
+ * string returned is always exactly of length
+ * ACPI_PCICLS_STRING_SIZE (includes null terminator).
+ *
+ ******************************************************************************/
+
+void acpi_ex_pci_cls_to_string(char *out_string, u8 class_code[3])
+{
+
+ ACPI_FUNCTION_ENTRY();
+
+ /* All 3 bytes are hexadecimal */
+
+ out_string[0] = acpi_ut_hex_to_ascii_char((u64)class_code[0], 4);
+ out_string[1] = acpi_ut_hex_to_ascii_char((u64)class_code[0], 0);
+ out_string[2] = acpi_ut_hex_to_ascii_char((u64)class_code[1], 4);
+ out_string[3] = acpi_ut_hex_to_ascii_char((u64)class_code[1], 0);
+ out_string[4] = acpi_ut_hex_to_ascii_char((u64)class_code[2], 4);
+ out_string[5] = acpi_ut_hex_to_ascii_char((u64)class_code[2], 0);
+ out_string[6] = 0;
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_is_valid_space_id
+ *
+ * PARAMETERS: space_id - ID to be validated
+ *
+ * RETURN: TRUE if space_id is a valid/supported ID.
+ *
+ * DESCRIPTION: Validate an operation region space_ID.
+ *
+ ******************************************************************************/
+
+u8 acpi_is_valid_space_id(u8 space_id)
+{
+
+ if ((space_id >= ACPI_NUM_PREDEFINED_REGIONS) &&
+ (space_id < ACPI_USER_REGION_BEGIN) &&
+ (space_id != ACPI_ADR_SPACE_DATA_TABLE) &&
+ (space_id != ACPI_ADR_SPACE_FIXED_HARDWARE)) {
+ return (FALSE);
+ }
+
+ return (TRUE);
+}