^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /******************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Name: hwesleep.c - ACPI Hardware Sleep/Wake Support functions for the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * extended FADT-V5 sleep registers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Copyright (C) 2000 - 2020, Intel Corp.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) *****************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <acpi/acpi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include "accommon.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #define _COMPONENT ACPI_HARDWARE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) ACPI_MODULE_NAME("hwesleep")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) /*******************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * FUNCTION: acpi_hw_execute_sleep_method
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * PARAMETERS: method_pathname - Pathname of method to execute
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) * integer_argument - Argument to pass to the method
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * RETURN: None
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * DESCRIPTION: Execute a sleep/wake related method with one integer argument
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * and no return value.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) ******************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) void acpi_hw_execute_sleep_method(char *method_pathname, u32 integer_argument)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) struct acpi_object_list arg_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) union acpi_object arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) ACPI_FUNCTION_TRACE(hw_execute_sleep_method);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) /* One argument, integer_argument; No return value expected */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) arg_list.count = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) arg_list.pointer = &arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) arg.type = ACPI_TYPE_INTEGER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) arg.integer.value = (u64)integer_argument;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) status = acpi_evaluate_object(NULL, method_pathname, &arg_list, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) ACPI_EXCEPTION((AE_INFO, status, "While executing method %s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) method_pathname));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) return_VOID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) /*******************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) * FUNCTION: acpi_hw_extended_sleep
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) * PARAMETERS: sleep_state - Which sleep state to enter
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) * RETURN: Status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) * DESCRIPTION: Enter a system sleep state via the extended FADT sleep
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) * registers (V5 FADT).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) * THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) ******************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) acpi_status acpi_hw_extended_sleep(u8 sleep_state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) u8 sleep_control;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) u64 sleep_status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) ACPI_FUNCTION_TRACE(hw_extended_sleep);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) /* Extended sleep registers must be valid */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) if (!acpi_gbl_FADT.sleep_control.address ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) !acpi_gbl_FADT.sleep_status.address) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) return_ACPI_STATUS(AE_NOT_EXIST);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) /* Clear wake status (WAK_STS) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) status = acpi_write((u64)ACPI_X_WAKE_STATUS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) &acpi_gbl_FADT.sleep_status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) if (ACPI_FAILURE(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) return_ACPI_STATUS(status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) acpi_gbl_system_awake_and_running = FALSE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) * Set the SLP_TYP and SLP_EN bits.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) * Note: We only use the first value returned by the \_Sx method
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) * (acpi_gbl_sleep_type_a) - As per ACPI specification.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) ACPI_DEBUG_PRINT((ACPI_DB_INIT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) "Entering sleep state [S%u]\n", sleep_state));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) sleep_control = ((acpi_gbl_sleep_type_a << ACPI_X_SLEEP_TYPE_POSITION) &
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) ACPI_X_SLEEP_TYPE_MASK) | ACPI_X_SLEEP_ENABLE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) /* Flush caches, as per ACPI specification */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) if (sleep_state < ACPI_STATE_S4) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) ACPI_FLUSH_CPU_CACHE();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) status = acpi_os_enter_sleep(sleep_state, sleep_control, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) if (status == AE_CTRL_TERMINATE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) return_ACPI_STATUS(AE_OK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) if (ACPI_FAILURE(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) return_ACPI_STATUS(status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) status = acpi_write((u64)sleep_control, &acpi_gbl_FADT.sleep_control);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) if (ACPI_FAILURE(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) return_ACPI_STATUS(status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) /* Wait for transition back to Working State */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) status = acpi_read(&sleep_status, &acpi_gbl_FADT.sleep_status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) if (ACPI_FAILURE(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) return_ACPI_STATUS(status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) } while (!(((u8)sleep_status) & ACPI_X_WAKE_STATUS));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) return_ACPI_STATUS(AE_OK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) /*******************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) * FUNCTION: acpi_hw_extended_wake_prep
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) * PARAMETERS: sleep_state - Which sleep state we just exited
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) * RETURN: Status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) * DESCRIPTION: Perform first part of OS-independent ACPI cleanup after
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) * a sleep. Called with interrupts ENABLED.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) ******************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) acpi_status acpi_hw_extended_wake_prep(u8 sleep_state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) u8 sleep_type_value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) ACPI_FUNCTION_TRACE(hw_extended_wake_prep);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) if (acpi_gbl_sleep_type_a_s0 != ACPI_SLEEP_TYPE_INVALID) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) sleep_type_value =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) ((acpi_gbl_sleep_type_a_s0 << ACPI_X_SLEEP_TYPE_POSITION) &
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) ACPI_X_SLEEP_TYPE_MASK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) (void)acpi_write((u64)(sleep_type_value | ACPI_X_SLEEP_ENABLE),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) &acpi_gbl_FADT.sleep_control);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) return_ACPI_STATUS(AE_OK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) /*******************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) * FUNCTION: acpi_hw_extended_wake
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) * PARAMETERS: sleep_state - Which sleep state we just exited
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) * RETURN: Status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) * DESCRIPTION: Perform OS-independent ACPI cleanup after a sleep
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) * Called with interrupts ENABLED.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) ******************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) acpi_status acpi_hw_extended_wake(u8 sleep_state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) ACPI_FUNCTION_TRACE(hw_extended_wake);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) /* Ensure enter_sleep_state_prep -> enter_sleep_state ordering */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) acpi_gbl_sleep_type_a = ACPI_SLEEP_TYPE_INVALID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) /* Execute the wake methods */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) acpi_hw_execute_sleep_method(METHOD_PATHNAME__SST, ACPI_SST_WAKING);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) acpi_hw_execute_sleep_method(METHOD_PATHNAME__WAK, sleep_state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) * Some BIOS code assumes that WAK_STS will be cleared on resume
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) * and use it to determine whether the system is rebooting or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) * resuming. Clear WAK_STS for compatibility.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) (void)acpi_write((u64)ACPI_X_WAKE_STATUS, &acpi_gbl_FADT.sleep_status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) acpi_gbl_system_awake_and_running = TRUE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) acpi_hw_execute_sleep_method(METHOD_PATHNAME__SST, ACPI_SST_WORKING);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) return_ACPI_STATUS(AE_OK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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