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Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
981 lines
26 KiB
C
981 lines
26 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Core ACPI (Advanced Configuration and Power Interface) support
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*
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* Copyright 2019 Google LLC
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*
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* Modified from coreboot file acpigen.h
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*/
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#ifndef __ACPI_ACPIGEN_H
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#define __ACPI_ACPIGEN_H
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#include <acpi/acpi_table.h>
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#include <linux/types.h>
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struct acpi_cstate;
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struct acpi_ctx;
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struct acpi_gen_regaddr;
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struct acpi_gpio;
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/* Top 4 bits of the value used to indicate a three-byte length value */
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#define ACPI_PKG_LEN_3_BYTES 0x80
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#define ACPI_METHOD_NARGS_MASK 0x7
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#define ACPI_METHOD_SERIALIZED_MASK BIT(3)
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#define ACPI_END_TAG 0x79
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/* ACPI Op/Prefix codes */
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enum {
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ZERO_OP = 0x00,
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ONE_OP = 0x01,
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NAME_OP = 0x08,
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BYTE_PREFIX = 0x0a,
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WORD_PREFIX = 0x0b,
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DWORD_PREFIX = 0x0c,
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STRING_PREFIX = 0x0d,
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QWORD_PREFIX = 0x0e,
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SCOPE_OP = 0x10,
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BUFFER_OP = 0x11,
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PACKAGE_OP = 0x12,
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METHOD_OP = 0x14,
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SLEEP_OP = 0x22,
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DUAL_NAME_PREFIX = 0x2e,
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MULTI_NAME_PREFIX = 0x2f,
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DEBUG_OP = 0x31,
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EXT_OP_PREFIX = 0x5b,
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ROOT_PREFIX = 0x5c,
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LOCAL0_OP = 0x60,
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LOCAL1_OP = 0x61,
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LOCAL2_OP = 0x62,
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LOCAL3_OP = 0x63,
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LOCAL4_OP = 0x64,
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LOCAL5_OP = 0x65,
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LOCAL6_OP = 0x66,
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LOCAL7_OP = 0x67,
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ARG0_OP = 0x68,
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ARG1_OP = 0x69,
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ARG2_OP = 0x6a,
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ARG3_OP = 0x6b,
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ARG4_OP = 0x6c,
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ARG5_OP = 0x6d,
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ARG6_OP = 0x6e,
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STORE_OP = 0x70,
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AND_OP = 0x7b,
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OR_OP = 0x7d,
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NOT_OP = 0x80,
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DEVICE_OP = 0x82,
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PROCESSOR_OP = 0x83,
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POWER_RES_OP = 0x84,
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NOTIFY_OP = 0x86,
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LEQUAL_OP = 0x93,
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TO_BUFFER_OP = 0x96,
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TO_INTEGER_OP = 0x99,
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IF_OP = 0xa0,
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ELSE_OP = 0xa1,
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RETURN_OP = 0xa4,
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};
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/**
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* enum psd_coord - Coordination types for P-states
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*
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* The type of coordination that exists (hardware) or is required (software) as
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* a result of the underlying hardware dependency
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*/
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enum psd_coord {
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SW_ALL = 0xfc,
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SW_ANY = 0xfd,
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HW_ALL = 0xfe
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};
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/**
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* enum csd_coord - Coordination types for C-states
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*
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* The type of coordination that exists (hardware) or is required (software) as
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* a result of the underlying hardware dependency
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*/
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enum csd_coord {
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CSD_HW_ALL = 0xfe,
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};
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/**
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* struct acpi_cstate - Information about a C-State
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*
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* @ctype: C State type (1=C1, 2=C2, 3=C3)
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* @latency: Worst-case latency to enter and exit the C State (in uS)
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* @power: Average power consumption of the processor when in this C-State (mW)
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* @resource: Register to read to place the processor in this state
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*/
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struct acpi_cstate {
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uint ctype;
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uint latency;
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uint power;
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struct acpi_gen_regaddr resource;
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};
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/**
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* struct acpi_tstate - Information about a Throttling Supported State
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*
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* See ACPI v6.3 section 8.4.5.2: _TSS (Throttling Supported States)
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*
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* @percent: Percent of the core CPU operating frequency that will be
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* available when this throttling state is invoked
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* @power: Throttling state’s maximum power dissipation (mw)
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* @latency: Worst-case latency (uS) that the CPU is unavailable during a
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* transition from any throttling state to this throttling state
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* @control: Value to be written to the Processor Control Register
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* (THROTTLE_CTRL) to initiate a transition to this throttling state
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* @status: Value in THROTTLE_STATUS when in this state
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*/
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struct acpi_tstate {
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uint percent;
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uint power;
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uint latency;
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uint control;
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uint status;
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};
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/**
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* acpigen_get_current() - Get the current ACPI code output pointer
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*
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* @ctx: ACPI context pointer
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* Return: output pointer
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*/
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u8 *acpigen_get_current(struct acpi_ctx *ctx);
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/**
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* acpigen_emit_byte() - Emit a byte to the ACPI code
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*
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* @ctx: ACPI context pointer
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* @data: Value to output
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*/
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void acpigen_emit_byte(struct acpi_ctx *ctx, uint data);
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/**
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* acpigen_emit_word() - Emit a 16-bit word to the ACPI code
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*
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* @ctx: ACPI context pointer
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* @data: Value to output
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*/
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void acpigen_emit_word(struct acpi_ctx *ctx, uint data);
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/**
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* acpigen_emit_dword() - Emit a 32-bit 'double word' to the ACPI code
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*
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* @ctx: ACPI context pointer
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* @data: Value to output
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*/
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void acpigen_emit_dword(struct acpi_ctx *ctx, uint data);
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/**
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* acpigen_emit_stream() - Emit a stream of bytes
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*
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* @ctx: ACPI context pointer
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* @data: Data to output
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* @size: Size of data in bytes
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*/
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void acpigen_emit_stream(struct acpi_ctx *ctx, const char *data, int size);
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/**
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* acpigen_emit_string() - Emit a string
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*
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* Emit a string with a null terminator
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*
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* @ctx: ACPI context pointer
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* @str: String to output, or NULL for an empty string
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*/
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void acpigen_emit_string(struct acpi_ctx *ctx, const char *str);
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/**
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* acpigen_write_len_f() - Write a 'forward' length placeholder
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*
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* This adds space for a length value in the ACPI stream and pushes the current
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* position (before the length) on the stack. After calling this you can write
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* some data and then call acpigen_pop_len() to update the length value.
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*
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* Usage:
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*
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* acpigen_write_len_f() ------\
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* acpigen_write...() |
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* acpigen_write...() |
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* acpigen_write_len_f() --\ |
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* acpigen_write...() | |
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* acpigen_write...() | |
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* acpigen_pop_len() ------/ |
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* acpigen_write...() |
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* acpigen_pop_len() ----------/
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*
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* See ACPI 6.3 section 20.2.4 Package Length Encoding
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*
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* This implementation always uses a 3-byte packet length for simplicity. It
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* could be adjusted to support other lengths.
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*
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* @ctx: ACPI context pointer
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*/
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void acpigen_write_len_f(struct acpi_ctx *ctx);
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/**
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* acpigen_pop_len() - Update the previously stacked length placeholder
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*
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* Call this after the data for the block has been written. It updates the
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* top length value in the stack and pops it off.
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*
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* @ctx: ACPI context pointer
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*/
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void acpigen_pop_len(struct acpi_ctx *ctx);
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/**
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* acpigen_write_package() - Start writing a package
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*
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* A package collects together a number of elements in the ACPI code. To write
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* a package use:
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*
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* acpigen_write_package(ctx, 3);
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* ...write things
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* acpigen_pop_len()
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*
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* If you don't know the number of elements in advance, acpigen_write_package()
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* returns a pointer to the value so you can update it later:
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*
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* char *num_elements = acpigen_write_package(ctx, 0);
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* ...write things
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* *num_elements += 1;
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* ...write things
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* *num_elements += 1;
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* acpigen_pop_len()
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*
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* @ctx: ACPI context pointer
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* @nr_el: Number of elements (0 if not known)
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* @returns pointer to the number of elements, which can be updated by the
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* caller if needed
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*/
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char *acpigen_write_package(struct acpi_ctx *ctx, int nr_el);
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/**
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* acpigen_write_byte() - Write a byte
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*
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* @ctx: ACPI context pointer
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* @data: Value to write
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*/
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void acpigen_write_byte(struct acpi_ctx *ctx, unsigned int data);
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/**
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* acpigen_write_word() - Write a word
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*
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* @ctx: ACPI context pointer
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* @data: Value to write
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*/
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void acpigen_write_word(struct acpi_ctx *ctx, unsigned int data);
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/**
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* acpigen_write_dword() - Write a dword
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*
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* @ctx: ACPI context pointer
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* @data: Value to write
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*/
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void acpigen_write_dword(struct acpi_ctx *ctx, unsigned int data);
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/**
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* acpigen_write_qword() - Write a qword
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*
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* @ctx: ACPI context pointer
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* @data: Value to write
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*/
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void acpigen_write_qword(struct acpi_ctx *ctx, u64 data);
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/**
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* acpigen_write_zero() - Write zero
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*
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* @ctx: ACPI context pointer
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*/
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void acpigen_write_zero(struct acpi_ctx *ctx);
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/**
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* acpigen_write_one() - Write one
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*
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* @ctx: ACPI context pointer
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*/
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void acpigen_write_one(struct acpi_ctx *ctx);
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/**
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* acpigen_write_integer() - Write an integer
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*
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* This writes an operation (BYTE_OP, WORD_OP, DWORD_OP, QWORD_OP depending on
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* the integer size) and an integer value. Note that WORD means 16 bits in ACPI.
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*
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* @ctx: ACPI context pointer
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* @data: Integer to write
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*/
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void acpigen_write_integer(struct acpi_ctx *ctx, u64 data);
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/**
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* acpigen_write_name_zero() - Write a named zero value
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*
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* @ctx: ACPI context pointer
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* @name: Name of the value
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*/
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void acpigen_write_name_zero(struct acpi_ctx *ctx, const char *name);
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/**
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* acpigen_write_name_one() - Write a named one value
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*
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* @ctx: ACPI context pointer
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* @name: Name of the value
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*/
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void acpigen_write_name_one(struct acpi_ctx *ctx, const char *name);
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/**
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* acpigen_write_name_byte() - Write a named byte value
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*
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* @ctx: ACPI context pointer
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* @name: Name of the value
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* @val: Value to write
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*/
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void acpigen_write_name_byte(struct acpi_ctx *ctx, const char *name, uint val);
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/**
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* acpigen_write_name_word() - Write a named word value
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*
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* @ctx: ACPI context pointer
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* @name: Name of the value
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* @val: Value to write
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*/
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void acpigen_write_name_word(struct acpi_ctx *ctx, const char *name, uint val);
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/**
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* acpigen_write_name_dword() - Write a named dword value
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*
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* @ctx: ACPI context pointer
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* @name: Name of the value
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* @val: Value to write
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*/
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void acpigen_write_name_dword(struct acpi_ctx *ctx, const char *name, uint val);
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/**
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* acpigen_write_name_qword() - Write a named qword value
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*
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* @ctx: ACPI context pointer
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* @name: Name of the value
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* @val: Value to write
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*/
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void acpigen_write_name_qword(struct acpi_ctx *ctx, const char *name, u64 val);
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/**
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* acpigen_write_name_integer() - Write a named integer value
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*
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* @ctx: ACPI context pointer
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* @name: Name of the value
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* @val: Value to write
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*/
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void acpigen_write_name_integer(struct acpi_ctx *ctx, const char *name,
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u64 val);
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/**
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* acpigen_write_name_string() - Write a named string value
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*
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* @ctx: ACPI context pointer
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* @name: Name of the value
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* @string: String to write
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*/
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void acpigen_write_name_string(struct acpi_ctx *ctx, const char *name,
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const char *string);
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/**
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* acpigen_write_string() - Write a string
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*
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* This writes a STRING_PREFIX followed by a null-terminated string
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*
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* @ctx: ACPI context pointer
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* @str: String to write
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*/
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void acpigen_write_string(struct acpi_ctx *ctx, const char *str);
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/**
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* acpigen_emit_namestring() - Emit an ACPI name
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*
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* This writes out an ACPI name or path in the required special format. It does
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* not add the NAME_OP prefix.
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*
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* @ctx: ACPI context pointer
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* @namepath: Name / path to emit
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*/
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void acpigen_emit_namestring(struct acpi_ctx *ctx, const char *namepath);
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/**
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* acpigen_write_name() - Write out an ACPI name
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*
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* This writes out an ACPI name or path in the required special format with a
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* NAME_OP prefix.
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*
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* @ctx: ACPI context pointer
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* @namepath: Name / path to emit
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*/
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void acpigen_write_name(struct acpi_ctx *ctx, const char *namepath);
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/**
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* acpigen_write_scope() - Write a scope
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*
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* @ctx: ACPI context pointer
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* @scope: Scope to write (e.g. "\\_SB.ABCD")
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*/
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void acpigen_write_scope(struct acpi_ctx *ctx, const char *scope);
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/**
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* acpigen_write_uuid() - Write a UUID
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*
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* This writes out a UUID in the format used by ACPI, with a BUFFER_OP prefix.
|
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*
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* @ctx: ACPI context pointer
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* @uuid: UUID to write in the form aabbccdd-eeff-gghh-iijj-kkllmmnnoopp
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* Return: 0 if OK, -EINVAL if the format is incorrect
|
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*/
|
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int acpigen_write_uuid(struct acpi_ctx *ctx, const char *uuid);
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|
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/**
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* acpigen_emit_ext_op() - Emit an extended op with the EXT_OP_PREFIX prefix
|
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*
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* @ctx: ACPI context pointer
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* @op: Operation code (e.g. SLEEP_OP)
|
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*/
|
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void acpigen_emit_ext_op(struct acpi_ctx *ctx, uint op);
|
||
|
||
/**
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* acpigen_write_method() - Write a method header
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*
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* @ctx: ACPI context pointer
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* @name: Method name (4 characters)
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* @nargs: Number of method arguments (0 if none)
|
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*/
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void acpigen_write_method(struct acpi_ctx *ctx, const char *name, int nargs);
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||
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/**
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* acpigen_write_method_serialized() - Write a method header
|
||
*
|
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* This sets the 'serialized' flag so that the method is thread-safe
|
||
*
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* @ctx: ACPI context pointer
|
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* @name: Method name (4 characters)
|
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* @nargs: Number of method arguments (0 if none)
|
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*/
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void acpigen_write_method_serialized(struct acpi_ctx *ctx, const char *name,
|
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int nargs);
|
||
|
||
/**
|
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* acpigen_write_device() - Write an ACPI device
|
||
*
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* @ctx: ACPI context pointer
|
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* @name: Device name to write
|
||
*/
|
||
void acpigen_write_device(struct acpi_ctx *ctx, const char *name);
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/**
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* acpigen_write_sta() - Write a _STA method
|
||
*
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||
* @ctx: ACPI context pointer
|
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* @status: Status value to return
|
||
*/
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||
void acpigen_write_sta(struct acpi_ctx *ctx, uint status);
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||
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/**
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* acpigen_write_resourcetemplate_header() - Write a ResourceTemplate header
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*
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* @ctx: ACPI context pointer
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*/
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void acpigen_write_resourcetemplate_header(struct acpi_ctx *ctx);
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||
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/**
|
||
* acpigen_write_resourcetemplate_footer() - Write a ResourceTemplate footer
|
||
*
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||
* @ctx: ACPI context pointer
|
||
*/
|
||
void acpigen_write_resourcetemplate_footer(struct acpi_ctx *ctx);
|
||
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||
/**
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||
* acpigen_write_register_resource() - Write a register resource
|
||
*
|
||
* This writes a header, the address information and a footer
|
||
*
|
||
* @ctx: ACPI context pointer
|
||
* @addr: Address to write
|
||
*/
|
||
void acpigen_write_register_resource(struct acpi_ctx *ctx,
|
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const struct acpi_gen_regaddr *addr);
|
||
|
||
/**
|
||
* acpigen_write_sleep() - Write a sleep operation
|
||
*
|
||
* @ctx: ACPI context pointer
|
||
* @sleep_ms: Number of milliseconds to sleep for
|
||
*/
|
||
void acpigen_write_sleep(struct acpi_ctx *ctx, u64 sleep_ms);
|
||
|
||
/**
|
||
* acpigen_write_store() - Write a store operation
|
||
*
|
||
* @ctx: ACPI context pointer
|
||
*/
|
||
void acpigen_write_store(struct acpi_ctx *ctx);
|
||
|
||
/**
|
||
* acpigen_write_debug_string() - Write a debug string
|
||
*
|
||
* This writes a debug operation with an associated string
|
||
*
|
||
* @ctx: ACPI context pointer
|
||
* @str: String to write
|
||
*/
|
||
void acpigen_write_debug_string(struct acpi_ctx *ctx, const char *str);
|
||
|
||
/**
|
||
* acpigen_write_or() - Write a bitwise OR operation
|
||
*
|
||
* res = arg1 | arg2
|
||
*
|
||
* @ctx: ACPI context pointer
|
||
* @arg1: ACPI opcode for operand 1 (e.g. LOCAL0_OP)
|
||
* @arg2: ACPI opcode for operand 2 (e.g. LOCAL1_OP)
|
||
* @res: ACPI opcode for result (e.g. LOCAL2_OP)
|
||
*/
|
||
void acpigen_write_or(struct acpi_ctx *ctx, u8 arg1, u8 arg2, u8 res);
|
||
|
||
/**
|
||
* acpigen_write_and() - Write a bitwise AND operation
|
||
*
|
||
* res = arg1 & arg2
|
||
*
|
||
* @ctx: ACPI context pointer
|
||
* @arg1: ACPI opcode for operand 1 (e.g. LOCAL0_OP)
|
||
* @arg2: ACPI opcode for operand 2 (e.g. LOCAL1_OP)
|
||
* @res: ACPI opcode for result (e.g. LOCAL2_OP)
|
||
*/
|
||
void acpigen_write_and(struct acpi_ctx *ctx, u8 arg1, u8 arg2, u8 res);
|
||
|
||
/**
|
||
* acpigen_write_not() - Write a bitwise NOT operation
|
||
*
|
||
* res = ~arg1
|
||
*
|
||
* @ctx: ACPI context pointer
|
||
* @arg: ACPI opcode for operand (e.g. LOCAL0_OP)
|
||
* @res: ACPI opcode for result (e.g. LOCAL2_OP)
|
||
*/
|
||
void acpigen_write_not(struct acpi_ctx *ctx, u8 arg, u8 res);
|
||
|
||
/**
|
||
* acpigen_write_power_res() - Write a power resource
|
||
*
|
||
* Name (_PRx, Package(One) { name })
|
||
* ...
|
||
* PowerResource (name, level, order)
|
||
*
|
||
* The caller should fill in the rest of the power resource and then call
|
||
* acpigen_pop_len() to close it off
|
||
*
|
||
* @ctx: ACPI context pointer
|
||
* @name: Name of power resource (e.g. "PRIC")
|
||
* @level: Deepest sleep level that this resource must be kept on (0=S0, 3=S3)
|
||
* @order: Order that this must be enabled/disabled (e.g. 0)
|
||
* @dev_stats: List of states to define, e.g. {"_PR0", "_PR3"}
|
||
* @dev_states_count: Number of dev states
|
||
*/
|
||
void acpigen_write_power_res(struct acpi_ctx *ctx, const char *name, uint level,
|
||
uint order, const char *const dev_states[],
|
||
size_t dev_states_count);
|
||
|
||
/**
|
||
* acpigen_set_enable_tx_gpio() - Emit ACPI code to enable/disable a GPIO
|
||
*
|
||
* This emits code to either enable to disable a Tx GPIO. It takes account of
|
||
* the GPIO polarity.
|
||
*
|
||
* The code needs access to the DW0 register for the pad being used. This is
|
||
* provided by gpio->pin0_addr and ACPI methods must be defined for the board
|
||
* which can read and write the pad's DW0 register given this address:
|
||
* @dw0_read: takes a single argument, the DW0 address
|
||
* returns the DW0 value
|
||
* @dw0:write: takes two arguments, the DW0 address and the value to write
|
||
* no return value
|
||
*
|
||
* Example code (-- means comment):
|
||
*
|
||
* -- Get Pad Configuration DW0 register value
|
||
* Method (GPC0, 0x1, Serialized)
|
||
* {
|
||
* -- Arg0 - GPIO DW0 address
|
||
* Store (Arg0, Local0)
|
||
* OperationRegion (PDW0, SystemMemory, Local0, 4)
|
||
* Field (PDW0, AnyAcc, NoLock, Preserve) {
|
||
* TEMP, 32
|
||
* }
|
||
* Return (TEMP)
|
||
* }
|
||
*
|
||
* -- Set Pad Configuration DW0 register value
|
||
* Method (SPC0, 0x2, Serialized)
|
||
* {
|
||
* -- Arg0 - GPIO DW0 address
|
||
* -- Arg1 - Value for DW0 register
|
||
* Store (Arg0, Local0)
|
||
* OperationRegion (PDW0, SystemMemory, Local0, 4)
|
||
* Field (PDW0, AnyAcc, NoLock, Preserve) {
|
||
* TEMP,32
|
||
* }
|
||
* Store (Arg1, TEMP)
|
||
* }
|
||
*
|
||
*
|
||
* @ctx: ACPI context pointer
|
||
* @tx_state_val: Mask to use to toggle the TX state on the GPIO pin, e,g.
|
||
* PAD_CFG0_TX_STATE
|
||
* @dw0_read: Method name to use to read dw0, e.g. "\\_SB.GPC0"
|
||
* @dw0_write: Method name to use to read dw0, e.g. "\\_SB.SPC0"
|
||
* @gpio: GPIO to change
|
||
* @enable: true to enable GPIO, false to disable
|
||
* Returns 0 on success, -ve on error.
|
||
*/
|
||
int acpigen_set_enable_tx_gpio(struct acpi_ctx *ctx, u32 tx_state_val,
|
||
const char *dw0_read, const char *dw0_write,
|
||
struct acpi_gpio *gpio, bool enable);
|
||
|
||
/**
|
||
* acpigen_write_prw() - Write a power resource for wake (_PRW)
|
||
*
|
||
* @ctx: ACPI context pointer
|
||
* @wake: GPE that wakes up the device
|
||
* @level: Deepest power system sleeping state that can be entered while still
|
||
* providing wake functionality
|
||
*/
|
||
void acpigen_write_prw(struct acpi_ctx *ctx, uint wake, uint level);
|
||
|
||
/**
|
||
* acpigen_write_if() - Write an If block
|
||
*
|
||
* This requires a call to acpigen_pop_len() to complete the block
|
||
*
|
||
* @ctx: ACPI context pointer
|
||
*/
|
||
void acpigen_write_if(struct acpi_ctx *ctx);
|
||
|
||
/**
|
||
* acpigen_write_if_lequal_op_int() - Write comparison between op and integer
|
||
*
|
||
* Generates ACPI code for checking if operand1 and operand2 are equal
|
||
*
|
||
* If (Lequal (op, val))
|
||
*
|
||
* @ctx: ACPI context pointer
|
||
* @op: Operand to check
|
||
* @val: Value to check against
|
||
*/
|
||
void acpigen_write_if_lequal_op_int(struct acpi_ctx *ctx, uint op, u64 val);
|
||
|
||
/**
|
||
* acpigen_write_else() - Write an Ef block
|
||
*
|
||
* This requires a call to acpigen_pop_len() to complete the block
|
||
*
|
||
* @ctx: ACPI context pointer
|
||
*/
|
||
void acpigen_write_else(struct acpi_ctx *ctx);
|
||
|
||
/**
|
||
* acpigen_write_to_buffer() - Write a ToBuffer operation
|
||
*
|
||
* E.g.: to generate: ToBuffer (Arg0, Local0)
|
||
* use acpigen_write_to_buffer(ctx, ARG0_OP, LOCAL0_OP)
|
||
*
|
||
* @ctx: ACPI context pointer
|
||
* @src: Source argument
|
||
* @dst: Destination argument
|
||
*/
|
||
void acpigen_write_to_buffer(struct acpi_ctx *ctx, uint src, uint dst);
|
||
|
||
/**
|
||
* acpigen_write_to_integer() - Write a ToInteger operation
|
||
*
|
||
* E.g.: to generate: ToInteger (Arg0, Local0)
|
||
* use acpigen_write_to_integer(ctx, ARG0_OP, LOCAL0_OP)
|
||
*
|
||
* @ctx: ACPI context pointer
|
||
* @src: Source argument
|
||
* @dst: Destination argument
|
||
*/
|
||
void acpigen_write_to_integer(struct acpi_ctx *ctx, uint src, uint dst);
|
||
|
||
/**
|
||
* acpigen_write_return_byte_buffer() - Write a return of a byte buffer
|
||
*
|
||
* @ctx: ACPI context pointer
|
||
* @arr: Array of bytes to return
|
||
* @size: Number of bytes
|
||
*/
|
||
void acpigen_write_return_byte_buffer(struct acpi_ctx *ctx, u8 *arr,
|
||
size_t size);
|
||
|
||
/**
|
||
* acpigen_write_return_singleton_buffer() - Write a return of a 1-byte buffer
|
||
*
|
||
* @ctx: ACPI context pointer
|
||
* @arg: Byte to return
|
||
*/
|
||
void acpigen_write_return_singleton_buffer(struct acpi_ctx *ctx, uint arg);
|
||
|
||
/**
|
||
* acpigen_write_return_byte() - Write a return of a byte
|
||
*
|
||
* @ctx: ACPI context pointer
|
||
* @arg: Byte to return
|
||
*/
|
||
void acpigen_write_return_byte(struct acpi_ctx *ctx, uint arg);
|
||
|
||
/**
|
||
* acpigen_write_dsm_start() - Start a _DSM method
|
||
*
|
||
* Generate ACPI AML code to start the _DSM method.
|
||
*
|
||
* The functions need to be called in the correct sequence as below.
|
||
*
|
||
* Within the <generate-code-here> region, Local0 and Local1 must be are left
|
||
* untouched, but Local2-Local7 can be used
|
||
*
|
||
* Arguments passed into _DSM method:
|
||
* Arg0 = UUID
|
||
* Arg1 = Revision
|
||
* Arg2 = Function index
|
||
* Arg3 = Function-specific arguments
|
||
*
|
||
* AML code generated looks like this:
|
||
* Method (_DSM, 4, Serialized) { -- acpigen_write_dsm_start)
|
||
* ToBuffer (Arg0, Local0)
|
||
* If (LEqual (Local0, ToUUID(uuid))) { -- acpigen_write_dsm_uuid_start
|
||
* ToInteger (Arg2, Local1)
|
||
* If (LEqual (Local1, 0)) { -- acpigen_write_dsm_uuid_start_cond
|
||
* <generate-code-here>
|
||
* } -- acpigen_write_dsm_uuid_end_cond
|
||
* ...
|
||
* If (LEqual (Local1, n)) { -- acpigen_write_dsm_uuid_start_cond
|
||
* <generate-code-here>
|
||
* } -- acpigen_write_dsm_uuid_end_cond
|
||
* Return (Buffer (One) { 0x0 })
|
||
* } -- acpigen_write_dsm_uuid_end
|
||
* ...
|
||
* If (LEqual (Local0, ToUUID(uuidn))) {
|
||
* ...
|
||
* }
|
||
* Return (Buffer (One) { 0x0 }) -- acpigen_write_dsm_end
|
||
* }
|
||
*
|
||
* @ctx: ACPI context pointer
|
||
*/
|
||
void acpigen_write_dsm_start(struct acpi_ctx *ctx);
|
||
|
||
/**
|
||
* acpigen_write_dsm_uuid_start() - Start a new UUID block
|
||
*
|
||
* This starts generation of code to handle a particular UUID:
|
||
*
|
||
* If (LEqual (Local0, ToUUID(uuid))) {
|
||
* ToInteger (Arg2, Local1)
|
||
*
|
||
* @ctx: ACPI context pointer
|
||
*/
|
||
int acpigen_write_dsm_uuid_start(struct acpi_ctx *ctx, const char *uuid);
|
||
|
||
/**
|
||
* acpigen_write_dsm_uuid_start_cond() - Start a new condition block
|
||
*
|
||
* This starts generation of condition-checking code to handle a particular
|
||
* function:
|
||
*
|
||
* If (LEqual (Local1, i))
|
||
*
|
||
* @ctx: ACPI context pointer
|
||
*/
|
||
void acpigen_write_dsm_uuid_start_cond(struct acpi_ctx *ctx, int seq);
|
||
|
||
/**
|
||
* acpigen_write_dsm_uuid_end_cond() - Start a new condition block
|
||
*
|
||
* This ends generation of condition-checking code to handle a particular
|
||
* function:
|
||
*
|
||
* }
|
||
*
|
||
* @ctx: ACPI context pointer
|
||
*/
|
||
void acpigen_write_dsm_uuid_end_cond(struct acpi_ctx *ctx);
|
||
|
||
/**
|
||
* acpigen_write_dsm_uuid_end() - End a UUID block
|
||
*
|
||
* This ends generation of code to handle a particular UUID:
|
||
*
|
||
* Return (Buffer (One) { 0x0 })
|
||
*
|
||
* @ctx: ACPI context pointer
|
||
*/
|
||
void acpigen_write_dsm_uuid_end(struct acpi_ctx *ctx);
|
||
|
||
/**
|
||
* acpigen_write_dsm_end() - End a _DSM method
|
||
*
|
||
* This ends generates of the _DSM block:
|
||
*
|
||
* Return (Buffer (One) { 0x0 })
|
||
*
|
||
* @ctx: ACPI context pointer
|
||
*/
|
||
void acpigen_write_dsm_end(struct acpi_ctx *ctx);
|
||
|
||
/**
|
||
* acpigen_write_processor() - Write a Processor package
|
||
*
|
||
* This emits a Processor package header with the required information. The
|
||
* caller must complete the information and call acpigen_pop_len() at the end
|
||
*
|
||
* @ctx: ACPI context pointer
|
||
* @cpuindex: CPU number
|
||
* @pblock_addr: PBlk system IO address
|
||
* @pblock_len: PBlk length
|
||
*/
|
||
void acpigen_write_processor(struct acpi_ctx *ctx, uint cpuindex,
|
||
u32 pblock_addr, uint pblock_len);
|
||
|
||
/**
|
||
* acpigen_write_processor_package() - Write a package containing the processors
|
||
*
|
||
* The package containins the name of each processor in the SoC
|
||
*
|
||
* @ctx: ACPI context pointer
|
||
* @name: Package name (.e.g "PPKG")
|
||
* @first_core: Number of the first core (e.g. 0)
|
||
* @core_count: Number of cores (e.g. 4)
|
||
*/
|
||
void acpigen_write_processor_package(struct acpi_ctx *ctx, const char *name,
|
||
uint first_core, uint core_count);
|
||
|
||
/**
|
||
* acpigen_write_processor_cnot() - Write a processor notification method
|
||
*
|
||
* This writes a method that notifies all CPU cores
|
||
*
|
||
* @ctx: ACPI context pointer
|
||
* @num_cores: Number of CPU cores
|
||
*/
|
||
void acpigen_write_processor_cnot(struct acpi_ctx *ctx, const uint num_cores);
|
||
|
||
/**
|
||
* acpigen_write_ppc() - generates a function returning max P-states
|
||
*
|
||
* @ctx: ACPI context pointer
|
||
* @num_pstates: Number of pstates to return
|
||
*/
|
||
void acpigen_write_ppc(struct acpi_ctx *ctx, uint num_pstates);
|
||
|
||
/**
|
||
* acpigen_write_ppc() - generates a function returning PPCM
|
||
*
|
||
* This returns the maximum number of supported P-states, as saved in the
|
||
* variable PPCM
|
||
*
|
||
* @ctx: ACPI context pointer
|
||
*/
|
||
void acpigen_write_ppc_nvs(struct acpi_ctx *ctx);
|
||
|
||
/**
|
||
* acpigen_write_tpc() - Write a _TPC method that returns the TPC limit
|
||
*
|
||
* @ctx: ACPI context pointer
|
||
* @gnvs_tpc_limit: Variable that holds the TPC limit
|
||
*/
|
||
void acpigen_write_tpc(struct acpi_ctx *ctx, const char *gnvs_tpc_limit);
|
||
|
||
/**
|
||
* acpigen_write_pss_package() - Write a PSS package
|
||
*
|
||
* See ACPI v6.3 section 8.4.6: Processor Performance Control
|
||
*
|
||
* @ctx: ACPI context pointer
|
||
* @corefreq: CPU core frequency in MHz
|
||
* @translat: worst-case latency in uS that the CPU is unavailable during a
|
||
* transition from any performance state to this performance state
|
||
* @busmlat: worst-case latency in microseconds that Bus Masters are prevented
|
||
* from accessing memory during a transition from any performance state to
|
||
* this performance state
|
||
* @control: Value to write to PERF_CTRL to move to this performance state
|
||
* @status: Expected PERF_STATUS value when in this state
|
||
*/
|
||
void acpigen_write_pss_package(struct acpi_ctx *ctx, uint corefreq, uint power,
|
||
uint translat, uint busmlat, uint control,
|
||
uint status);
|
||
|
||
/**
|
||
* acpigen_write_psd_package() - Write a PSD package
|
||
*
|
||
* Writes a P-State dependency package
|
||
*
|
||
* See ACPI v6.3 section 8.4.6.5: _PSD (P-State Dependency)
|
||
*
|
||
* @ctx: ACPI context pointer
|
||
* @domain: Dependency domain number to which this P state entry belongs
|
||
* @numprocs: Number of processors belonging to the domain for this logical
|
||
* processor’s P-states
|
||
* @coordtype: Coordination type
|
||
*/
|
||
void acpigen_write_psd_package(struct acpi_ctx *ctx, uint domain, uint numprocs,
|
||
enum psd_coord coordtype);
|
||
|
||
/**
|
||
* acpigen_write_cst_package() - Write a _CST package
|
||
*
|
||
* See ACPI v6.3 section 8.4.2.1: _CST (C States)
|
||
*
|
||
* @ctx: ACPI context pointer
|
||
* @entry: Array of entries
|
||
* @nentries; Number of entries
|
||
*/
|
||
void acpigen_write_cst_package(struct acpi_ctx *ctx,
|
||
const struct acpi_cstate *entry, int nentries);
|
||
|
||
/**
|
||
* acpigen_write_csd_package() - Write a _CSD Package
|
||
*
|
||
* See ACPI v6.3 section 8.4.2.2: _CSD (C-State Dependency)
|
||
*
|
||
* @ctx: ACPI context pointer
|
||
* @domain: dependency domain number to which this C state entry belongs
|
||
* @numprocs: number of processors belonging to the domain for the particular
|
||
* C-state
|
||
* @coordtype: Co-ordination type
|
||
* @index: Index of the C-State entry in the _CST object for which the
|
||
* dependency applies
|
||
*/
|
||
void acpigen_write_csd_package(struct acpi_ctx *ctx, uint domain, uint numprocs,
|
||
enum csd_coord coordtype, uint index);
|
||
|
||
/**
|
||
* acpigen_write_tss_package() - Write a _TSS package
|
||
*
|
||
* @ctx: ACPI context pointer
|
||
* @entry: Entries to write
|
||
* @nentries: Number of entries to write
|
||
*/
|
||
void acpigen_write_tss_package(struct acpi_ctx *ctx,
|
||
struct acpi_tstate *entry, int nentries);
|
||
|
||
/**
|
||
* acpigen_write_tsd_package() - Write a _TSD package
|
||
*
|
||
* See ACPI v6.3 section 8.4.5.4: _TSD (T-State Dependency)
|
||
*
|
||
* @ctx: ACPI context pointer
|
||
* @domain: dependency domain number to which this T state entry belongs
|
||
* @numprocs: Number of processors belonging to the domain for this logical
|
||
* processor’s T-states
|
||
* @coordtype: Coordination type
|
||
*/
|
||
void acpigen_write_tsd_package(struct acpi_ctx *ctx, uint domain, uint numprocs,
|
||
enum psd_coord coordtype);
|
||
|
||
#endif
|