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author | 2023-02-21 18:24:12 -0800 | |
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committer | 2023-02-21 18:24:12 -0800 | |
commit | 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch) | |
tree | cc5c2d0a898769fd59549594fedb3ee6f84e59a0 /include/acpi/acpi_bus.h | |
download | linux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.tar.gz linux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.zip |
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 'include/acpi/acpi_bus.h')
-rw-r--r-- | include/acpi/acpi_bus.h | 804 |
1 files changed, 804 insertions, 0 deletions
diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h new file mode 100644 index 000000000..e44be3111 --- /dev/null +++ b/include/acpi/acpi_bus.h @@ -0,0 +1,804 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * acpi_bus.h - ACPI Bus Driver ($Revision: 22 $) + * + * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com> + * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> + */ + +#ifndef __ACPI_BUS_H__ +#define __ACPI_BUS_H__ + +#include <linux/device.h> +#include <linux/property.h> + +/* TBD: Make dynamic */ +#define ACPI_MAX_HANDLES 10 +struct acpi_handle_list { + u32 count; + acpi_handle handles[ACPI_MAX_HANDLES]; +}; + +/* acpi_utils.h */ +acpi_status +acpi_extract_package(union acpi_object *package, + struct acpi_buffer *format, struct acpi_buffer *buffer); +acpi_status +acpi_evaluate_integer(acpi_handle handle, + acpi_string pathname, + struct acpi_object_list *arguments, unsigned long long *data); +acpi_status +acpi_evaluate_reference(acpi_handle handle, + acpi_string pathname, + struct acpi_object_list *arguments, + struct acpi_handle_list *list); +acpi_status +acpi_evaluate_ost(acpi_handle handle, u32 source_event, u32 status_code, + struct acpi_buffer *status_buf); + +acpi_status +acpi_get_physical_device_location(acpi_handle handle, struct acpi_pld_info **pld); + +bool acpi_has_method(acpi_handle handle, char *name); +acpi_status acpi_execute_simple_method(acpi_handle handle, char *method, + u64 arg); +acpi_status acpi_evaluate_ej0(acpi_handle handle); +acpi_status acpi_evaluate_lck(acpi_handle handle, int lock); +acpi_status acpi_evaluate_reg(acpi_handle handle, u8 space_id, u32 function); +bool acpi_ata_match(acpi_handle handle); +bool acpi_bay_match(acpi_handle handle); +bool acpi_dock_match(acpi_handle handle); + +bool acpi_check_dsm(acpi_handle handle, const guid_t *guid, u64 rev, u64 funcs); +union acpi_object *acpi_evaluate_dsm(acpi_handle handle, const guid_t *guid, + u64 rev, u64 func, union acpi_object *argv4); + +static inline union acpi_object * +acpi_evaluate_dsm_typed(acpi_handle handle, const guid_t *guid, u64 rev, + u64 func, union acpi_object *argv4, + acpi_object_type type) +{ + union acpi_object *obj; + + obj = acpi_evaluate_dsm(handle, guid, rev, func, argv4); + if (obj && obj->type != type) { + ACPI_FREE(obj); + obj = NULL; + } + + return obj; +} + +#define ACPI_INIT_DSM_ARGV4(cnt, eles) \ + { \ + .package.type = ACPI_TYPE_PACKAGE, \ + .package.count = (cnt), \ + .package.elements = (eles) \ + } + +bool acpi_dev_found(const char *hid); +bool acpi_dev_present(const char *hid, const char *uid, s64 hrv); +bool acpi_reduced_hardware(void); + +#ifdef CONFIG_ACPI + +struct proc_dir_entry; + +#define ACPI_BUS_FILE_ROOT "acpi" +extern struct proc_dir_entry *acpi_root_dir; + +enum acpi_bus_device_type { + ACPI_BUS_TYPE_DEVICE = 0, + ACPI_BUS_TYPE_POWER, + ACPI_BUS_TYPE_PROCESSOR, + ACPI_BUS_TYPE_THERMAL, + ACPI_BUS_TYPE_POWER_BUTTON, + ACPI_BUS_TYPE_SLEEP_BUTTON, + ACPI_BUS_TYPE_ECDT_EC, + ACPI_BUS_DEVICE_TYPE_COUNT +}; + +struct acpi_driver; +struct acpi_device; + +/* + * ACPI Scan Handler + * ----------------- + */ + +struct acpi_hotplug_profile { + struct kobject kobj; + int (*scan_dependent)(struct acpi_device *adev); + void (*notify_online)(struct acpi_device *adev); + bool enabled:1; + bool demand_offline:1; +}; + +static inline struct acpi_hotplug_profile *to_acpi_hotplug_profile( + struct kobject *kobj) +{ + return container_of(kobj, struct acpi_hotplug_profile, kobj); +} + +struct acpi_scan_handler { + const struct acpi_device_id *ids; + struct list_head list_node; + bool (*match)(const char *idstr, const struct acpi_device_id **matchid); + int (*attach)(struct acpi_device *dev, const struct acpi_device_id *id); + void (*detach)(struct acpi_device *dev); + void (*bind)(struct device *phys_dev); + void (*unbind)(struct device *phys_dev); + struct acpi_hotplug_profile hotplug; +}; + +/* + * ACPI Hotplug Context + * -------------------- + */ + +struct acpi_hotplug_context { + struct acpi_device *self; + int (*notify)(struct acpi_device *, u32); + void (*uevent)(struct acpi_device *, u32); + void (*fixup)(struct acpi_device *); +}; + +/* + * ACPI Driver + * ----------- + */ + +typedef int (*acpi_op_add) (struct acpi_device * device); +typedef void (*acpi_op_remove) (struct acpi_device *device); +typedef void (*acpi_op_notify) (struct acpi_device * device, u32 event); + +struct acpi_device_ops { + acpi_op_add add; + acpi_op_remove remove; + acpi_op_notify notify; +}; + +#define ACPI_DRIVER_ALL_NOTIFY_EVENTS 0x1 /* system AND device events */ + +struct acpi_driver { + char name[80]; + char class[80]; + const struct acpi_device_id *ids; /* Supported Hardware IDs */ + unsigned int flags; + struct acpi_device_ops ops; + struct device_driver drv; + struct module *owner; +}; + +/* + * ACPI Device + * ----------- + */ + +/* Status (_STA) */ + +struct acpi_device_status { + u32 present:1; + u32 enabled:1; + u32 show_in_ui:1; + u32 functional:1; + u32 battery_present:1; + u32 reserved:27; +}; + +/* Flags */ + +struct acpi_device_flags { + u32 dynamic_status:1; + u32 removable:1; + u32 ejectable:1; + u32 power_manageable:1; + u32 match_driver:1; + u32 initialized:1; + u32 visited:1; + u32 hotplug_notify:1; + u32 is_dock_station:1; + u32 of_compatible_ok:1; + u32 coherent_dma:1; + u32 cca_seen:1; + u32 enumeration_by_parent:1; + u32 honor_deps:1; + u32 reserved:18; +}; + +/* File System */ + +struct acpi_device_dir { + struct proc_dir_entry *entry; +}; + +#define acpi_device_dir(d) ((d)->dir.entry) + +/* Plug and Play */ + +typedef char acpi_bus_id[8]; +typedef u64 acpi_bus_address; +typedef char acpi_device_name[40]; +typedef char acpi_device_class[20]; + +struct acpi_hardware_id { + struct list_head list; + const char *id; +}; + +struct acpi_pnp_type { + u32 hardware_id:1; + u32 bus_address:1; + u32 platform_id:1; + u32 backlight:1; + u32 reserved:28; +}; + +struct acpi_device_pnp { + acpi_bus_id bus_id; /* Object name */ + int instance_no; /* Instance number of this object */ + struct acpi_pnp_type type; /* ID type */ + acpi_bus_address bus_address; /* _ADR */ + char *unique_id; /* _UID */ + struct list_head ids; /* _HID and _CIDs */ + acpi_device_name device_name; /* Driver-determined */ + acpi_device_class device_class; /* " */ + union acpi_object *str_obj; /* unicode string for _STR method */ +}; + +#define acpi_device_bid(d) ((d)->pnp.bus_id) +#define acpi_device_adr(d) ((d)->pnp.bus_address) +const char *acpi_device_hid(struct acpi_device *device); +#define acpi_device_uid(d) ((d)->pnp.unique_id) +#define acpi_device_name(d) ((d)->pnp.device_name) +#define acpi_device_class(d) ((d)->pnp.device_class) + +/* Power Management */ + +struct acpi_device_power_flags { + u32 explicit_get:1; /* _PSC present? */ + u32 power_resources:1; /* Power resources */ + u32 inrush_current:1; /* Serialize Dx->D0 */ + u32 power_removed:1; /* Optimize Dx->D0 */ + u32 ignore_parent:1; /* Power is independent of parent power state */ + u32 dsw_present:1; /* _DSW present? */ + u32 reserved:26; +}; + +struct acpi_device_power_state { + struct { + u8 valid:1; + u8 explicit_set:1; /* _PSx present? */ + u8 reserved:6; + } flags; + int power; /* % Power (compared to D0) */ + int latency; /* Dx->D0 time (microseconds) */ + struct list_head resources; /* Power resources referenced */ +}; + +struct acpi_device_power { + int state; /* Current state */ + struct acpi_device_power_flags flags; + struct acpi_device_power_state states[ACPI_D_STATE_COUNT]; /* Power states (D0-D3Cold) */ + u8 state_for_enumeration; /* Deepest power state for enumeration */ +}; + +struct acpi_dep_data { + struct list_head node; + acpi_handle supplier; + acpi_handle consumer; + bool honor_dep; +}; + +/* Performance Management */ + +struct acpi_device_perf_flags { + u8 reserved:8; +}; + +struct acpi_device_perf_state { + struct { + u8 valid:1; + u8 reserved:7; + } flags; + u8 power; /* % Power (compared to P0) */ + u8 performance; /* % Performance ( " ) */ + int latency; /* Px->P0 time (microseconds) */ +}; + +struct acpi_device_perf { + int state; + struct acpi_device_perf_flags flags; + int state_count; + struct acpi_device_perf_state *states; +}; + +/* Wakeup Management */ +struct acpi_device_wakeup_flags { + u8 valid:1; /* Can successfully enable wakeup? */ + u8 notifier_present:1; /* Wake-up notify handler has been installed */ +}; + +struct acpi_device_wakeup_context { + void (*func)(struct acpi_device_wakeup_context *context); + struct device *dev; +}; + +struct acpi_device_wakeup { + acpi_handle gpe_device; + u64 gpe_number; + u64 sleep_state; + struct list_head resources; + struct acpi_device_wakeup_flags flags; + struct acpi_device_wakeup_context context; + struct wakeup_source *ws; + int prepare_count; + int enable_count; +}; + +struct acpi_device_physical_node { + unsigned int node_id; + struct list_head node; + struct device *dev; + bool put_online:1; +}; + +struct acpi_device_properties { + const guid_t *guid; + union acpi_object *properties; + struct list_head list; + void **bufs; +}; + +/* ACPI Device Specific Data (_DSD) */ +struct acpi_device_data { + const union acpi_object *pointer; + struct list_head properties; + const union acpi_object *of_compatible; + struct list_head subnodes; +}; + +struct acpi_gpio_mapping; + +/* Device */ +struct acpi_device { + u32 pld_crc; + int device_type; + acpi_handle handle; /* no handle for fixed hardware */ + struct fwnode_handle fwnode; + struct list_head wakeup_list; + struct list_head del_list; + struct acpi_device_status status; + struct acpi_device_flags flags; + struct acpi_device_pnp pnp; + struct acpi_device_power power; + struct acpi_device_wakeup wakeup; + struct acpi_device_perf performance; + struct acpi_device_dir dir; + struct acpi_device_data data; + struct acpi_scan_handler *handler; + struct acpi_hotplug_context *hp; + const struct acpi_gpio_mapping *driver_gpios; + void *driver_data; + struct device dev; + unsigned int physical_node_count; + unsigned int dep_unmet; + struct list_head physical_node_list; + struct mutex physical_node_lock; + void (*remove)(struct acpi_device *); +}; + +/* Non-device subnode */ +struct acpi_data_node { + const char *name; + acpi_handle handle; + struct fwnode_handle fwnode; + struct fwnode_handle *parent; + struct acpi_device_data data; + struct list_head sibling; + struct kobject kobj; + struct completion kobj_done; +}; + +extern const struct fwnode_operations acpi_device_fwnode_ops; +extern const struct fwnode_operations acpi_data_fwnode_ops; +extern const struct fwnode_operations acpi_static_fwnode_ops; + +bool is_acpi_device_node(const struct fwnode_handle *fwnode); +bool is_acpi_data_node(const struct fwnode_handle *fwnode); + +static inline bool is_acpi_node(const struct fwnode_handle *fwnode) +{ + return (is_acpi_device_node(fwnode) || is_acpi_data_node(fwnode)); +} + +#define to_acpi_device_node(__fwnode) \ + ({ \ + typeof(__fwnode) __to_acpi_device_node_fwnode = __fwnode; \ + \ + is_acpi_device_node(__to_acpi_device_node_fwnode) ? \ + container_of(__to_acpi_device_node_fwnode, \ + struct acpi_device, fwnode) : \ + NULL; \ + }) + +#define to_acpi_data_node(__fwnode) \ + ({ \ + typeof(__fwnode) __to_acpi_data_node_fwnode = __fwnode; \ + \ + is_acpi_data_node(__to_acpi_data_node_fwnode) ? \ + container_of(__to_acpi_data_node_fwnode, \ + struct acpi_data_node, fwnode) : \ + NULL; \ + }) + +static inline bool is_acpi_static_node(const struct fwnode_handle *fwnode) +{ + return !IS_ERR_OR_NULL(fwnode) && + fwnode->ops == &acpi_static_fwnode_ops; +} + +static inline bool acpi_data_node_match(const struct fwnode_handle *fwnode, + const char *name) +{ + return is_acpi_data_node(fwnode) ? + (!strcmp(to_acpi_data_node(fwnode)->name, name)) : false; +} + +static inline struct fwnode_handle *acpi_fwnode_handle(struct acpi_device *adev) +{ + return &adev->fwnode; +} + +static inline void *acpi_driver_data(struct acpi_device *d) +{ + return d->driver_data; +} + +#define to_acpi_device(d) container_of(d, struct acpi_device, dev) +#define to_acpi_driver(d) container_of(d, struct acpi_driver, drv) + +static inline struct acpi_device *acpi_dev_parent(struct acpi_device *adev) +{ + if (adev->dev.parent) + return to_acpi_device(adev->dev.parent); + + return NULL; +} + +static inline void acpi_set_device_status(struct acpi_device *adev, u32 sta) +{ + *((u32 *)&adev->status) = sta; +} + +static inline void acpi_set_hp_context(struct acpi_device *adev, + struct acpi_hotplug_context *hp) +{ + hp->self = adev; + adev->hp = hp; +} + +void acpi_initialize_hp_context(struct acpi_device *adev, + struct acpi_hotplug_context *hp, + int (*notify)(struct acpi_device *, u32), + void (*uevent)(struct acpi_device *, u32)); + +/* acpi_device.dev.bus == &acpi_bus_type */ +extern struct bus_type acpi_bus_type; + +int acpi_bus_for_each_dev(int (*fn)(struct device *, void *), void *data); +int acpi_dev_for_each_child(struct acpi_device *adev, + int (*fn)(struct acpi_device *, void *), void *data); +int acpi_dev_for_each_child_reverse(struct acpi_device *adev, + int (*fn)(struct acpi_device *, void *), + void *data); + +/* + * Events + * ------ + */ + +struct acpi_bus_event { + struct list_head node; + acpi_device_class device_class; + acpi_bus_id bus_id; + u32 type; + u32 data; +}; + +extern struct kobject *acpi_kobj; +extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int); +void acpi_bus_private_data_handler(acpi_handle, void *); +int acpi_bus_get_private_data(acpi_handle, void **); +int acpi_bus_attach_private_data(acpi_handle, void *); +void acpi_bus_detach_private_data(acpi_handle); +extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32); +extern int register_acpi_notifier(struct notifier_block *); +extern int unregister_acpi_notifier(struct notifier_block *); + +/* + * External Functions + */ + +acpi_status acpi_bus_get_status_handle(acpi_handle handle, + unsigned long long *sta); +int acpi_bus_get_status(struct acpi_device *device); + +int acpi_bus_set_power(acpi_handle handle, int state); +const char *acpi_power_state_string(int state); +int acpi_device_set_power(struct acpi_device *device, int state); +int acpi_bus_init_power(struct acpi_device *device); +int acpi_device_fix_up_power(struct acpi_device *device); +void acpi_device_fix_up_power_extended(struct acpi_device *adev); +int acpi_bus_update_power(acpi_handle handle, int *state_p); +int acpi_device_update_power(struct acpi_device *device, int *state_p); +bool acpi_bus_power_manageable(acpi_handle handle); +void acpi_dev_power_up_children_with_adr(struct acpi_device *adev); +int acpi_device_power_add_dependent(struct acpi_device *adev, + struct device *dev); +void acpi_device_power_remove_dependent(struct acpi_device *adev, + struct device *dev); + +#ifdef CONFIG_PM +bool acpi_bus_can_wakeup(acpi_handle handle); +#else +static inline bool acpi_bus_can_wakeup(acpi_handle handle) { return false; } +#endif + +void acpi_scan_lock_acquire(void); +void acpi_scan_lock_release(void); +void acpi_lock_hp_context(void); +void acpi_unlock_hp_context(void); +int acpi_scan_add_handler(struct acpi_scan_handler *handler); +int acpi_bus_register_driver(struct acpi_driver *driver); +void acpi_bus_unregister_driver(struct acpi_driver *driver); +int acpi_bus_scan(acpi_handle handle); +void acpi_bus_trim(struct acpi_device *start); +acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd); +int acpi_match_device_ids(struct acpi_device *device, + const struct acpi_device_id *ids); +void acpi_set_modalias(struct acpi_device *adev, const char *default_id, + char *modalias, size_t len); +int acpi_create_dir(struct acpi_device *); +void acpi_remove_dir(struct acpi_device *); + +static inline bool acpi_device_enumerated(struct acpi_device *adev) +{ + return adev && adev->flags.initialized && adev->flags.visited; +} + +/** + * module_acpi_driver(acpi_driver) - Helper macro for registering an ACPI driver + * @__acpi_driver: acpi_driver struct + * + * Helper macro for ACPI drivers which do not do anything special in module + * init/exit. This eliminates a lot of boilerplate. Each module may only + * use this macro once, and calling it replaces module_init() and module_exit() + */ +#define module_acpi_driver(__acpi_driver) \ + module_driver(__acpi_driver, acpi_bus_register_driver, \ + acpi_bus_unregister_driver) + +/* + * Bind physical devices with ACPI devices + */ +struct acpi_bus_type { + struct list_head list; + const char *name; + bool (*match)(struct device *dev); + struct acpi_device * (*find_companion)(struct device *); + void (*setup)(struct device *); +}; +int register_acpi_bus_type(struct acpi_bus_type *); +int unregister_acpi_bus_type(struct acpi_bus_type *); +int acpi_bind_one(struct device *dev, struct acpi_device *adev); +int acpi_unbind_one(struct device *dev); + +enum acpi_bridge_type { + ACPI_BRIDGE_TYPE_PCIE = 1, + ACPI_BRIDGE_TYPE_CXL, +}; + +struct acpi_pci_root { + struct acpi_device * device; + struct pci_bus *bus; + u16 segment; + int bridge_type; + struct resource secondary; /* downstream bus range */ + + u32 osc_support_set; /* _OSC state of support bits */ + u32 osc_control_set; /* _OSC state of control bits */ + u32 osc_ext_support_set; /* _OSC state of extended support bits */ + u32 osc_ext_control_set; /* _OSC state of extended control bits */ + phys_addr_t mcfg_addr; +}; + +/* helper */ + +bool acpi_dma_supported(const struct acpi_device *adev); +enum dev_dma_attr acpi_get_dma_attr(struct acpi_device *adev); +int acpi_iommu_fwspec_init(struct device *dev, u32 id, + struct fwnode_handle *fwnode, + const struct iommu_ops *ops); +int acpi_dma_get_range(struct device *dev, const struct bus_dma_region **map); +int acpi_dma_configure_id(struct device *dev, enum dev_dma_attr attr, + const u32 *input_id); +static inline int acpi_dma_configure(struct device *dev, + enum dev_dma_attr attr) +{ + return acpi_dma_configure_id(dev, attr, NULL); +} +struct acpi_device *acpi_find_child_device(struct acpi_device *parent, + u64 address, bool check_children); +struct acpi_device *acpi_find_child_by_adr(struct acpi_device *adev, + acpi_bus_address adr); +int acpi_is_root_bridge(acpi_handle); +struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle); + +int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state); +int acpi_disable_wakeup_device_power(struct acpi_device *dev); + +#ifdef CONFIG_X86 +bool acpi_device_override_status(struct acpi_device *adev, unsigned long long *status); +bool acpi_quirk_skip_acpi_ac_and_battery(void); +#else +static inline bool acpi_device_override_status(struct acpi_device *adev, + unsigned long long *status) +{ + return false; +} +static inline bool acpi_quirk_skip_acpi_ac_and_battery(void) +{ + return false; +} +#endif + +#if IS_ENABLED(CONFIG_X86_ANDROID_TABLETS) +bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev); +int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip); +#else +static inline bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev) +{ + return false; +} +static inline int +acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip) +{ + *skip = false; + return 0; +} +#endif + +#ifdef CONFIG_PM +void acpi_pm_wakeup_event(struct device *dev); +acpi_status acpi_add_pm_notifier(struct acpi_device *adev, struct device *dev, + void (*func)(struct acpi_device_wakeup_context *context)); +acpi_status acpi_remove_pm_notifier(struct acpi_device *adev); +bool acpi_pm_device_can_wakeup(struct device *dev); +int acpi_pm_device_sleep_state(struct device *, int *, int); +int acpi_pm_set_device_wakeup(struct device *dev, bool enable); +#else +static inline void acpi_pm_wakeup_event(struct device *dev) +{ +} +static inline acpi_status acpi_add_pm_notifier(struct acpi_device *adev, + struct device *dev, + void (*func)(struct acpi_device_wakeup_context *context)) +{ + return AE_SUPPORT; +} +static inline acpi_status acpi_remove_pm_notifier(struct acpi_device *adev) +{ + return AE_SUPPORT; +} +static inline bool acpi_pm_device_can_wakeup(struct device *dev) +{ + return false; +} +static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m) +{ + if (p) + *p = ACPI_STATE_D0; + + return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3_COLD) ? + m : ACPI_STATE_D0; +} +static inline int acpi_pm_set_device_wakeup(struct device *dev, bool enable) +{ + return -ENODEV; +} +#endif + +#ifdef CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT +bool acpi_sleep_state_supported(u8 sleep_state); +#else +static inline bool acpi_sleep_state_supported(u8 sleep_state) { return false; } +#endif + +#ifdef CONFIG_ACPI_SLEEP +u32 acpi_target_system_state(void); +#else +static inline u32 acpi_target_system_state(void) { return ACPI_STATE_S0; } +#endif + +static inline bool acpi_device_power_manageable(struct acpi_device *adev) +{ + return adev->flags.power_manageable; +} + +static inline bool acpi_device_can_wakeup(struct acpi_device *adev) +{ + return adev->wakeup.flags.valid; +} + +static inline bool acpi_device_can_poweroff(struct acpi_device *adev) +{ + return adev->power.states[ACPI_STATE_D3_COLD].flags.valid || + ((acpi_gbl_FADT.header.revision < 6) && + adev->power.states[ACPI_STATE_D3_HOT].flags.explicit_set); +} + +bool acpi_dev_hid_uid_match(struct acpi_device *adev, const char *hid2, const char *uid2); +int acpi_dev_uid_to_integer(struct acpi_device *adev, u64 *integer); + +void acpi_dev_clear_dependencies(struct acpi_device *supplier); +bool acpi_dev_ready_for_enumeration(const struct acpi_device *device); +struct acpi_device *acpi_dev_get_next_consumer_dev(struct acpi_device *supplier, + struct acpi_device *start); + +/** + * for_each_acpi_consumer_dev - iterate over the consumer ACPI devices for a + * given supplier + * @supplier: Pointer to the supplier's ACPI device + * @consumer: Pointer to &struct acpi_device to hold the consumer, initially NULL + */ +#define for_each_acpi_consumer_dev(supplier, consumer) \ + for (consumer = acpi_dev_get_next_consumer_dev(supplier, NULL); \ + consumer; \ + consumer = acpi_dev_get_next_consumer_dev(supplier, consumer)) + +struct acpi_device * +acpi_dev_get_next_match_dev(struct acpi_device *adev, const char *hid, const char *uid, s64 hrv); +struct acpi_device * +acpi_dev_get_first_match_dev(const char *hid, const char *uid, s64 hrv); + +/** + * for_each_acpi_dev_match - iterate over ACPI devices that matching the criteria + * @adev: pointer to the matching ACPI device, NULL at the end of the loop + * @hid: Hardware ID of the device. + * @uid: Unique ID of the device, pass NULL to not check _UID + * @hrv: Hardware Revision of the device, pass -1 to not check _HRV + * + * The caller is responsible for invoking acpi_dev_put() on the returned device. + */ +#define for_each_acpi_dev_match(adev, hid, uid, hrv) \ + for (adev = acpi_dev_get_first_match_dev(hid, uid, hrv); \ + adev; \ + adev = acpi_dev_get_next_match_dev(adev, hid, uid, hrv)) + +static inline struct acpi_device *acpi_dev_get(struct acpi_device *adev) +{ + return adev ? to_acpi_device(get_device(&adev->dev)) : NULL; +} + +static inline void acpi_dev_put(struct acpi_device *adev) +{ + if (adev) + put_device(&adev->dev); +} + +struct acpi_device *acpi_fetch_acpi_dev(acpi_handle handle); +struct acpi_device *acpi_get_acpi_dev(acpi_handle handle); + +static inline void acpi_put_acpi_dev(struct acpi_device *adev) +{ + acpi_dev_put(adev); +} +#else /* CONFIG_ACPI */ + +static inline int register_acpi_bus_type(void *bus) { return 0; } +static inline int unregister_acpi_bus_type(void *bus) { return 0; } + +#endif /* CONFIG_ACPI */ + +#endif /*__ACPI_BUS_H__*/ |