Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/acpi/hardware/hwsleep.c b/drivers/acpi/hardware/hwsleep.c
new file mode 100644
index 0000000..77b3e9a
--- /dev/null
+++ b/drivers/acpi/hardware/hwsleep.c
@@ -0,0 +1,582 @@
+
+/******************************************************************************
+ *
+ * Name: hwsleep.c - ACPI Hardware Sleep/Wake Interface
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2005, R. Byron Moore
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions, and the following disclaimer,
+ * without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ * substantially similar to the "NO WARRANTY" disclaimer below
+ * ("Disclaimer") and any redistribution must be conditioned upon
+ * including a substantially similar Disclaimer requirement for further
+ * binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ * of any contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#include <linux/module.h>
+
+#include <acpi/acpi.h>
+
+#define _COMPONENT ACPI_HARDWARE
+ ACPI_MODULE_NAME ("hwsleep")
+
+
+#define METHOD_NAME__BFS "\\_BFS"
+#define METHOD_NAME__GTS "\\_GTS"
+#define METHOD_NAME__PTS "\\_PTS"
+#define METHOD_NAME__SST "\\_SI._SST"
+#define METHOD_NAME__WAK "\\_WAK"
+
+#define ACPI_SST_INDICATOR_OFF 0
+#define ACPI_SST_WORKING 1
+#define ACPI_SST_WAKING 2
+#define ACPI_SST_SLEEPING 3
+#define ACPI_SST_SLEEP_CONTEXT 4
+
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_set_firmware_waking_vector
+ *
+ * PARAMETERS: physical_address - Physical address of ACPI real mode
+ * entry point.
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: access function for d_firmware_waking_vector field in FACS
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_set_firmware_waking_vector (
+ acpi_physical_address physical_address)
+{
+
+ ACPI_FUNCTION_TRACE ("acpi_set_firmware_waking_vector");
+
+
+ /* Set the vector */
+
+ if (acpi_gbl_common_fACS.vector_width == 32) {
+ *(ACPI_CAST_PTR (u32, acpi_gbl_common_fACS.firmware_waking_vector))
+ = (u32) physical_address;
+ }
+ else {
+ *acpi_gbl_common_fACS.firmware_waking_vector
+ = physical_address;
+ }
+
+ return_ACPI_STATUS (AE_OK);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_get_firmware_waking_vector
+ *
+ * PARAMETERS: *physical_address - Output buffer where contents of
+ * the firmware_waking_vector field of
+ * the FACS will be stored.
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Access function for firmware_waking_vector field in FACS
+ *
+ ******************************************************************************/
+#ifdef ACPI_FUTURE_USAGE
+acpi_status
+acpi_get_firmware_waking_vector (
+ acpi_physical_address *physical_address)
+{
+
+ ACPI_FUNCTION_TRACE ("acpi_get_firmware_waking_vector");
+
+
+ if (!physical_address) {
+ return_ACPI_STATUS (AE_BAD_PARAMETER);
+ }
+
+ /* Get the vector */
+
+ if (acpi_gbl_common_fACS.vector_width == 32) {
+ *physical_address = (acpi_physical_address)
+ *(ACPI_CAST_PTR (u32, acpi_gbl_common_fACS.firmware_waking_vector));
+ }
+ else {
+ *physical_address =
+ *acpi_gbl_common_fACS.firmware_waking_vector;
+ }
+
+ return_ACPI_STATUS (AE_OK);
+}
+#endif
+
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_enter_sleep_state_prep
+ *
+ * PARAMETERS: sleep_state - Which sleep state to enter
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Prepare to enter a system sleep state (see ACPI 2.0 spec p 231)
+ * This function must execute with interrupts enabled.
+ * We break sleeping into 2 stages so that OSPM can handle
+ * various OS-specific tasks between the two steps.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_enter_sleep_state_prep (
+ u8 sleep_state)
+{
+ acpi_status status;
+ struct acpi_object_list arg_list;
+ union acpi_object arg;
+
+
+ ACPI_FUNCTION_TRACE ("acpi_enter_sleep_state_prep");
+
+
+ /*
+ * _PSW methods could be run here to enable wake-on keyboard, LAN, etc.
+ */
+ status = acpi_get_sleep_type_data (sleep_state,
+ &acpi_gbl_sleep_type_a, &acpi_gbl_sleep_type_b);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
+ /* Setup parameter object */
+
+ arg_list.count = 1;
+ arg_list.pointer = &arg;
+
+ arg.type = ACPI_TYPE_INTEGER;
+ arg.integer.value = sleep_state;
+
+ /* Run the _PTS and _GTS methods */
+
+ status = acpi_evaluate_object (NULL, METHOD_NAME__PTS, &arg_list, NULL);
+ if (ACPI_FAILURE (status) && status != AE_NOT_FOUND) {
+ return_ACPI_STATUS (status);
+ }
+
+ status = acpi_evaluate_object (NULL, METHOD_NAME__GTS, &arg_list, NULL);
+ if (ACPI_FAILURE (status) && status != AE_NOT_FOUND) {
+ return_ACPI_STATUS (status);
+ }
+
+ /* Setup the argument to _SST */
+
+ switch (sleep_state) {
+ case ACPI_STATE_S0:
+ arg.integer.value = ACPI_SST_WORKING;
+ break;
+
+ case ACPI_STATE_S1:
+ case ACPI_STATE_S2:
+ case ACPI_STATE_S3:
+ arg.integer.value = ACPI_SST_SLEEPING;
+ break;
+
+ case ACPI_STATE_S4:
+ arg.integer.value = ACPI_SST_SLEEP_CONTEXT;
+ break;
+
+ default:
+ arg.integer.value = ACPI_SST_INDICATOR_OFF; /* Default is indicator off */
+ break;
+ }
+
+ /* Set the system indicators to show the desired sleep state. */
+
+ status = acpi_evaluate_object (NULL, METHOD_NAME__SST, &arg_list, NULL);
+ if (ACPI_FAILURE (status) && status != AE_NOT_FOUND) {
+ ACPI_REPORT_ERROR (("Method _SST failed, %s\n", acpi_format_exception (status)));
+ }
+
+ return_ACPI_STATUS (AE_OK);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_enter_sleep_state
+ *
+ * PARAMETERS: sleep_state - Which sleep state to enter
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Enter a system sleep state (see ACPI 2.0 spec p 231)
+ * THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED
+ *
+ ******************************************************************************/
+
+acpi_status asmlinkage
+acpi_enter_sleep_state (
+ u8 sleep_state)
+{
+ u32 PM1Acontrol;
+ u32 PM1Bcontrol;
+ struct acpi_bit_register_info *sleep_type_reg_info;
+ struct acpi_bit_register_info *sleep_enable_reg_info;
+ u32 in_value;
+ acpi_status status;
+
+
+ ACPI_FUNCTION_TRACE ("acpi_enter_sleep_state");
+
+
+ if ((acpi_gbl_sleep_type_a > ACPI_SLEEP_TYPE_MAX) ||
+ (acpi_gbl_sleep_type_b > ACPI_SLEEP_TYPE_MAX)) {
+ ACPI_REPORT_ERROR (("Sleep values out of range: A=%X B=%X\n",
+ acpi_gbl_sleep_type_a, acpi_gbl_sleep_type_b));
+ return_ACPI_STATUS (AE_AML_OPERAND_VALUE);
+ }
+
+ sleep_type_reg_info = acpi_hw_get_bit_register_info (ACPI_BITREG_SLEEP_TYPE_A);
+ sleep_enable_reg_info = acpi_hw_get_bit_register_info (ACPI_BITREG_SLEEP_ENABLE);
+
+ /* Clear wake status */
+
+ status = acpi_set_register (ACPI_BITREG_WAKE_STATUS, 1, ACPI_MTX_DO_NOT_LOCK);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
+ /* Clear all fixed and general purpose status bits */
+
+ status = acpi_hw_clear_acpi_status (ACPI_MTX_DO_NOT_LOCK);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
+ /*
+ * 1) Disable/Clear all GPEs
+ * 2) Enable all wakeup GPEs
+ */
+ status = acpi_hw_disable_all_gpes (ACPI_ISR);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+ acpi_gbl_system_awake_and_running = FALSE;
+
+ status = acpi_hw_enable_all_wakeup_gpes (ACPI_ISR);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
+ /* Get current value of PM1A control */
+
+ status = acpi_hw_register_read (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1_CONTROL, &PM1Acontrol);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+ ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "Entering sleep state [S%d]\n", sleep_state));
+
+ /* Clear SLP_EN and SLP_TYP fields */
+
+ PM1Acontrol &= ~(sleep_type_reg_info->access_bit_mask | sleep_enable_reg_info->access_bit_mask);
+ PM1Bcontrol = PM1Acontrol;
+
+ /* Insert SLP_TYP bits */
+
+ PM1Acontrol |= (acpi_gbl_sleep_type_a << sleep_type_reg_info->bit_position);
+ PM1Bcontrol |= (acpi_gbl_sleep_type_b << sleep_type_reg_info->bit_position);
+
+ /*
+ * We split the writes of SLP_TYP and SLP_EN to workaround
+ * poorly implemented hardware.
+ */
+
+ /* Write #1: fill in SLP_TYP data */
+
+ status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1A_CONTROL, PM1Acontrol);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
+ status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1B_CONTROL, PM1Bcontrol);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
+ /* Insert SLP_ENABLE bit */
+
+ PM1Acontrol |= sleep_enable_reg_info->access_bit_mask;
+ PM1Bcontrol |= sleep_enable_reg_info->access_bit_mask;
+
+ /* Write #2: SLP_TYP + SLP_EN */
+
+ ACPI_FLUSH_CPU_CACHE ();
+
+ status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1A_CONTROL, PM1Acontrol);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
+ status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1B_CONTROL, PM1Bcontrol);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
+ if (sleep_state > ACPI_STATE_S3) {
+ /*
+ * We wanted to sleep > S3, but it didn't happen (by virtue of the fact that
+ * we are still executing!)
+ *
+ * Wait ten seconds, then try again. This is to get S4/S5 to work on all machines.
+ *
+ * We wait so long to allow chipsets that poll this reg very slowly to
+ * still read the right value. Ideally, this block would go
+ * away entirely.
+ */
+ acpi_os_stall (10000000);
+
+ status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1_CONTROL,
+ sleep_enable_reg_info->access_bit_mask);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+ }
+
+ /* Wait until we enter sleep state */
+
+ do {
+ status = acpi_get_register (ACPI_BITREG_WAKE_STATUS, &in_value, ACPI_MTX_DO_NOT_LOCK);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
+ /* Spin until we wake */
+
+ } while (!in_value);
+
+ return_ACPI_STATUS (AE_OK);
+}
+EXPORT_SYMBOL(acpi_enter_sleep_state);
+
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_enter_sleep_state_s4bios
+ *
+ * PARAMETERS: None
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Perform a S4 bios request.
+ * THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED
+ *
+ ******************************************************************************/
+
+acpi_status asmlinkage
+acpi_enter_sleep_state_s4bios (
+ void)
+{
+ u32 in_value;
+ acpi_status status;
+
+
+ ACPI_FUNCTION_TRACE ("acpi_enter_sleep_state_s4bios");
+
+
+ status = acpi_set_register (ACPI_BITREG_WAKE_STATUS, 1, ACPI_MTX_DO_NOT_LOCK);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
+ status = acpi_hw_clear_acpi_status (ACPI_MTX_DO_NOT_LOCK);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
+ /*
+ * 1) Disable/Clear all GPEs
+ * 2) Enable all wakeup GPEs
+ */
+ status = acpi_hw_disable_all_gpes (ACPI_ISR);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+ acpi_gbl_system_awake_and_running = FALSE;
+
+ status = acpi_hw_enable_all_wakeup_gpes (ACPI_ISR);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
+ ACPI_FLUSH_CPU_CACHE ();
+
+ status = acpi_os_write_port (acpi_gbl_FADT->smi_cmd, (u32) acpi_gbl_FADT->S4bios_req, 8);
+
+ do {
+ acpi_os_stall(1000);
+ status = acpi_get_register (ACPI_BITREG_WAKE_STATUS, &in_value, ACPI_MTX_DO_NOT_LOCK);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+ } while (!in_value);
+
+ return_ACPI_STATUS (AE_OK);
+}
+EXPORT_SYMBOL(acpi_enter_sleep_state_s4bios);
+
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_leave_sleep_state
+ *
+ * PARAMETERS: sleep_state - Which sleep state we just exited
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Perform OS-independent ACPI cleanup after a sleep
+ * Called with interrupts ENABLED.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_leave_sleep_state (
+ u8 sleep_state)
+{
+ struct acpi_object_list arg_list;
+ union acpi_object arg;
+ acpi_status status;
+ struct acpi_bit_register_info *sleep_type_reg_info;
+ struct acpi_bit_register_info *sleep_enable_reg_info;
+ u32 PM1Acontrol;
+ u32 PM1Bcontrol;
+
+
+ ACPI_FUNCTION_TRACE ("acpi_leave_sleep_state");
+
+
+ /*
+ * Set SLP_TYPE and SLP_EN to state S0.
+ * This is unclear from the ACPI Spec, but it is required
+ * by some machines.
+ */
+ status = acpi_get_sleep_type_data (ACPI_STATE_S0,
+ &acpi_gbl_sleep_type_a, &acpi_gbl_sleep_type_b);
+ if (ACPI_SUCCESS (status)) {
+ sleep_type_reg_info = acpi_hw_get_bit_register_info (ACPI_BITREG_SLEEP_TYPE_A);
+ sleep_enable_reg_info = acpi_hw_get_bit_register_info (ACPI_BITREG_SLEEP_ENABLE);
+
+ /* Get current value of PM1A control */
+
+ status = acpi_hw_register_read (ACPI_MTX_DO_NOT_LOCK,
+ ACPI_REGISTER_PM1_CONTROL, &PM1Acontrol);
+ if (ACPI_SUCCESS (status)) {
+ /* Clear SLP_EN and SLP_TYP fields */
+
+ PM1Acontrol &= ~(sleep_type_reg_info->access_bit_mask |
+ sleep_enable_reg_info->access_bit_mask);
+ PM1Bcontrol = PM1Acontrol;
+
+ /* Insert SLP_TYP bits */
+
+ PM1Acontrol |= (acpi_gbl_sleep_type_a << sleep_type_reg_info->bit_position);
+ PM1Bcontrol |= (acpi_gbl_sleep_type_b << sleep_type_reg_info->bit_position);
+
+ /* Just ignore any errors */
+
+ (void) acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK,
+ ACPI_REGISTER_PM1A_CONTROL, PM1Acontrol);
+ (void) acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK,
+ ACPI_REGISTER_PM1B_CONTROL, PM1Bcontrol);
+ }
+ }
+
+ /* Ensure enter_sleep_state_prep -> enter_sleep_state ordering */
+
+ acpi_gbl_sleep_type_a = ACPI_SLEEP_TYPE_INVALID;
+
+ /* Setup parameter object */
+
+ arg_list.count = 1;
+ arg_list.pointer = &arg;
+ arg.type = ACPI_TYPE_INTEGER;
+
+ /* Ignore any errors from these methods */
+
+ arg.integer.value = ACPI_SST_WAKING;
+ status = acpi_evaluate_object (NULL, METHOD_NAME__SST, &arg_list, NULL);
+ if (ACPI_FAILURE (status) && status != AE_NOT_FOUND) {
+ ACPI_REPORT_ERROR (("Method _SST failed, %s\n", acpi_format_exception (status)));
+ }
+
+ arg.integer.value = sleep_state;
+ status = acpi_evaluate_object (NULL, METHOD_NAME__BFS, &arg_list, NULL);
+ if (ACPI_FAILURE (status) && status != AE_NOT_FOUND) {
+ ACPI_REPORT_ERROR (("Method _BFS failed, %s\n", acpi_format_exception (status)));
+ }
+
+ status = acpi_evaluate_object (NULL, METHOD_NAME__WAK, &arg_list, NULL);
+ if (ACPI_FAILURE (status) && status != AE_NOT_FOUND) {
+ ACPI_REPORT_ERROR (("Method _WAK failed, %s\n", acpi_format_exception (status)));
+ }
+ /* TBD: _WAK "sometimes" returns stuff - do we want to look at it? */
+
+ /*
+ * Restore the GPEs:
+ * 1) Disable/Clear all GPEs
+ * 2) Enable all runtime GPEs
+ */
+ status = acpi_hw_disable_all_gpes (ACPI_NOT_ISR);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+ acpi_gbl_system_awake_and_running = TRUE;
+
+ status = acpi_hw_enable_all_runtime_gpes (ACPI_NOT_ISR);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
+ /* Enable power button */
+
+ (void) acpi_set_register(acpi_gbl_fixed_event_info[ACPI_EVENT_POWER_BUTTON].enable_register_id,
+ 1, ACPI_MTX_DO_NOT_LOCK);
+ (void) acpi_set_register(acpi_gbl_fixed_event_info[ACPI_EVENT_POWER_BUTTON].status_register_id,
+ 1, ACPI_MTX_DO_NOT_LOCK);
+
+ arg.integer.value = ACPI_SST_WORKING;
+ status = acpi_evaluate_object (NULL, METHOD_NAME__SST, &arg_list, NULL);
+ if (ACPI_FAILURE (status) && status != AE_NOT_FOUND) {
+ ACPI_REPORT_ERROR (("Method _SST failed, %s\n", acpi_format_exception (status)));
+ }
+
+ return_ACPI_STATUS (status);
+}