--- /dev/null
+/******************************************************************************
+ *
+ * Module Name: osunixxf - UNIX OSL interfaces
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2014, Intel Corp.
+ * 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.
+ */
+
+/*
+ * These interfaces are required in order to compile the ASL compiler and the
+ * various ACPICA tools under Linux or other Unix-like system.
+ */
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "amlcode.h"
+#include "acparser.h"
+#include "acdebug.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <unistd.h>
+#include <sys/time.h>
+#include <semaphore.h>
+#include <pthread.h>
+#include <errno.h>
+
+#define _COMPONENT ACPI_OS_SERVICES
+ACPI_MODULE_NAME("osunixxf")
+
+u8 acpi_gbl_debug_timeout = FALSE;
+
+/* Upcalls to acpi_exec */
+
+void
+ae_table_override(struct acpi_table_header *existing_table,
+ struct acpi_table_header **new_table);
+
+typedef void *(*PTHREAD_CALLBACK) (void *);
+
+/* Buffer used by acpi_os_vprintf */
+
+#define ACPI_VPRINTF_BUFFER_SIZE 512
+#define _ASCII_NEWLINE '\n'
+
+/* Terminal support for acpi_exec only */
+
+#ifdef ACPI_EXEC_APP
+#include <termios.h>
+
+struct termios original_term_attributes;
+int term_attributes_were_set = 0;
+
+acpi_status acpi_ut_read_line(char *buffer, u32 buffer_length, u32 *bytes_read);
+
+static void os_enter_line_edit_mode(void);
+
+static void os_exit_line_edit_mode(void);
+
+/******************************************************************************
+ *
+ * FUNCTION: os_enter_line_edit_mode, os_exit_line_edit_mode
+ *
+ * PARAMETERS: None
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Enter/Exit the raw character input mode for the terminal.
+ *
+ * Interactive line-editing support for the AML debugger. Used with the
+ * common/acgetline module.
+ *
+ * readline() is not used because of non-portability. It is not available
+ * on all systems, and if it is, often the package must be manually installed.
+ *
+ * Therefore, we use the POSIX tcgetattr/tcsetattr and do the minimal line
+ * editing that we need in acpi_os_get_line.
+ *
+ * If the POSIX tcgetattr/tcsetattr interfaces are unavailable, these
+ * calls will also work:
+ * For os_enter_line_edit_mode: system ("stty cbreak -echo")
+ * For os_exit_line_edit_mode: system ("stty cooked echo")
+ *
+ *****************************************************************************/
+
+static void os_enter_line_edit_mode(void)
+{
+ struct termios local_term_attributes;
+
+ /* Get and keep the original attributes */
+
+ if (tcgetattr(STDIN_FILENO, &original_term_attributes)) {
+ fprintf(stderr, "Could not get terminal attributes!\n");
+ return;
+ }
+
+ /* Set the new attributes to enable raw character input */
+
+ memcpy(&local_term_attributes, &original_term_attributes,
+ sizeof(struct termios));
+
+ local_term_attributes.c_lflag &= ~(ICANON | ECHO);
+ local_term_attributes.c_cc[VMIN] = 1;
+ local_term_attributes.c_cc[VTIME] = 0;
+
+ if (tcsetattr(STDIN_FILENO, TCSANOW, &local_term_attributes)) {
+ fprintf(stderr, "Could not set terminal attributes!\n");
+ return;
+ }
+
+ term_attributes_were_set = 1;
+}
+
+static void os_exit_line_edit_mode(void)
+{
+
+ if (!term_attributes_were_set) {
+ return;
+ }
+
+ /* Set terminal attributes back to the original values */
+
+ if (tcsetattr(STDIN_FILENO, TCSANOW, &original_term_attributes)) {
+ fprintf(stderr, "Could not restore terminal attributes!\n");
+ }
+}
+
+#else
+
+/* These functions are not needed for other ACPICA utilities */
+
+#define os_enter_line_edit_mode()
+#define os_exit_line_edit_mode()
+#endif
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_os_initialize, acpi_os_terminate
+ *
+ * PARAMETERS: None
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Initialize and terminate this module.
+ *
+ *****************************************************************************/
+
+acpi_status acpi_os_initialize(void)
+{
+
+ acpi_gbl_output_file = stdout;
+
+ os_enter_line_edit_mode();
+ return (AE_OK);
+}
+
+acpi_status acpi_os_terminate(void)
+{
+
+ os_exit_line_edit_mode();
+ return (AE_OK);
+}
+
+#ifndef ACPI_USE_NATIVE_RSDP_POINTER
+/******************************************************************************
+ *
+ * FUNCTION: acpi_os_get_root_pointer
+ *
+ * PARAMETERS: None
+ *
+ * RETURN: RSDP physical address
+ *
+ * DESCRIPTION: Gets the ACPI root pointer (RSDP)
+ *
+ *****************************************************************************/
+
+acpi_physical_address acpi_os_get_root_pointer(void)
+{
+
+ return (0);
+}
+#endif
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_os_predefined_override
+ *
+ * PARAMETERS: init_val - Initial value of the predefined object
+ * new_val - The new value for the object
+ *
+ * RETURN: Status, pointer to value. Null pointer returned if not
+ * overriding.
+ *
+ * DESCRIPTION: Allow the OS to override predefined names
+ *
+ *****************************************************************************/
+
+acpi_status
+acpi_os_predefined_override(const struct acpi_predefined_names * init_val,
+ acpi_string * new_val)
+{
+
+ if (!init_val || !new_val) {
+ return (AE_BAD_PARAMETER);
+ }
+
+ *new_val = NULL;
+ return (AE_OK);
+}
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_os_table_override
+ *
+ * PARAMETERS: existing_table - Header of current table (probably
+ * firmware)
+ * new_table - Where an entire new table is returned.
+ *
+ * RETURN: Status, pointer to new table. Null pointer returned if no
+ * table is available to override
+ *
+ * DESCRIPTION: Return a different version of a table if one is available
+ *
+ *****************************************************************************/
+
+acpi_status
+acpi_os_table_override(struct acpi_table_header * existing_table,
+ struct acpi_table_header ** new_table)
+{
+
+ if (!existing_table || !new_table) {
+ return (AE_BAD_PARAMETER);
+ }
+
+ *new_table = NULL;
+
+#ifdef ACPI_EXEC_APP
+
+ ae_table_override(existing_table, new_table);
+ return (AE_OK);
+#else
+
+ return (AE_NO_ACPI_TABLES);
+#endif
+}
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_os_physical_table_override
+ *
+ * PARAMETERS: existing_table - Header of current table (probably firmware)
+ * new_address - Where new table address is returned
+ * (Physical address)
+ * new_table_length - Where new table length is returned
+ *
+ * RETURN: Status, address/length of new table. Null pointer returned
+ * if no table is available to override.
+ *
+ * DESCRIPTION: Returns AE_SUPPORT, function not used in user space.
+ *
+ *****************************************************************************/
+
+acpi_status
+acpi_os_physical_table_override(struct acpi_table_header * existing_table,
+ acpi_physical_address * new_address,
+ u32 *new_table_length)
+{
+
+ return (AE_SUPPORT);
+}
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_os_redirect_output
+ *
+ * PARAMETERS: destination - An open file handle/pointer
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Causes redirect of acpi_os_printf and acpi_os_vprintf
+ *
+ *****************************************************************************/
+
+void acpi_os_redirect_output(void *destination)
+{
+
+ acpi_gbl_output_file = destination;
+}
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_os_printf
+ *
+ * PARAMETERS: fmt, ... - Standard printf format
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Formatted output. Note: very similar to acpi_os_vprintf
+ * (performance), changes should be tracked in both functions.
+ *
+ *****************************************************************************/
+
+void ACPI_INTERNAL_VAR_XFACE acpi_os_printf(const char *fmt, ...)
+{
+ va_list args;
+ u8 flags;
+
+ flags = acpi_gbl_db_output_flags;
+ if (flags & ACPI_DB_REDIRECTABLE_OUTPUT) {
+
+ /* Output is directable to either a file (if open) or the console */
+
+ if (acpi_gbl_debug_file) {
+
+ /* Output file is open, send the output there */
+
+ va_start(args, fmt);
+ vfprintf(acpi_gbl_debug_file, fmt, args);
+ va_end(args);
+ } else {
+ /* No redirection, send output to console (once only!) */
+
+ flags |= ACPI_DB_CONSOLE_OUTPUT;
+ }
+ }
+
+ if (flags & ACPI_DB_CONSOLE_OUTPUT) {
+ va_start(args, fmt);
+ vfprintf(acpi_gbl_output_file, fmt, args);
+ va_end(args);
+ }
+}
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_os_vprintf
+ *
+ * PARAMETERS: fmt - Standard printf format
+ * args - Argument list
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Formatted output with argument list pointer. Note: very
+ * similar to acpi_os_printf, changes should be tracked in both
+ * functions.
+ *
+ *****************************************************************************/
+
+void acpi_os_vprintf(const char *fmt, va_list args)
+{
+ u8 flags;
+ char buffer[ACPI_VPRINTF_BUFFER_SIZE];
+
+ /*
+ * We build the output string in a local buffer because we may be
+ * outputting the buffer twice. Using vfprintf is problematic because
+ * some implementations modify the args pointer/structure during
+ * execution. Thus, we use the local buffer for portability.
+ *
+ * Note: Since this module is intended for use by the various ACPICA
+ * utilities/applications, we can safely declare the buffer on the stack.
+ * Also, This function is used for relatively small error messages only.
+ */
+ vsnprintf(buffer, ACPI_VPRINTF_BUFFER_SIZE, fmt, args);
+
+ flags = acpi_gbl_db_output_flags;
+ if (flags & ACPI_DB_REDIRECTABLE_OUTPUT) {
+
+ /* Output is directable to either a file (if open) or the console */
+
+ if (acpi_gbl_debug_file) {
+
+ /* Output file is open, send the output there */
+
+ fputs(buffer, acpi_gbl_debug_file);
+ } else {
+ /* No redirection, send output to console (once only!) */
+
+ flags |= ACPI_DB_CONSOLE_OUTPUT;
+ }
+ }
+
+ if (flags & ACPI_DB_CONSOLE_OUTPUT) {
+ fputs(buffer, acpi_gbl_output_file);
+ }
+}
+
+#ifndef ACPI_EXEC_APP
+/******************************************************************************
+ *
+ * FUNCTION: acpi_os_get_line
+ *
+ * PARAMETERS: buffer - Where to return the command line
+ * buffer_length - Maximum length of Buffer
+ * bytes_read - Where the actual byte count is returned
+ *
+ * RETURN: Status and actual bytes read
+ *
+ * DESCRIPTION: Get the next input line from the terminal. NOTE: For the
+ * acpi_exec utility, we use the acgetline module instead to
+ * provide line-editing and history support.
+ *
+ *****************************************************************************/
+
+acpi_status acpi_os_get_line(char *buffer, u32 buffer_length, u32 *bytes_read)
+{
+ int input_char;
+ u32 end_of_line;
+
+ /* Standard acpi_os_get_line for all utilities except acpi_exec */
+
+ for (end_of_line = 0;; end_of_line++) {
+ if (end_of_line >= buffer_length) {
+ return (AE_BUFFER_OVERFLOW);
+ }
+
+ if ((input_char = getchar()) == EOF) {
+ return (AE_ERROR);
+ }
+
+ if (!input_char || input_char == _ASCII_NEWLINE) {
+ break;
+ }
+
+ buffer[end_of_line] = (char)input_char;
+ }
+
+ /* Null terminate the buffer */
+
+ buffer[end_of_line] = 0;
+
+ /* Return the number of bytes in the string */
+
+ if (bytes_read) {
+ *bytes_read = end_of_line;
+ }
+
+ return (AE_OK);
+}
+#endif
+
+#ifndef ACPI_USE_NATIVE_MEMORY_MAPPING
+/******************************************************************************
+ *
+ * FUNCTION: acpi_os_map_memory
+ *
+ * PARAMETERS: where - Physical address of memory to be mapped
+ * length - How much memory to map
+ *
+ * RETURN: Pointer to mapped memory. Null on error.
+ *
+ * DESCRIPTION: Map physical memory into caller's address space
+ *
+ *****************************************************************************/
+
+void *acpi_os_map_memory(acpi_physical_address where, acpi_size length)
+{
+
+ return (ACPI_TO_POINTER((acpi_size) where));
+}
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_os_unmap_memory
+ *
+ * PARAMETERS: where - Logical address of memory to be unmapped
+ * length - How much memory to unmap
+ *
+ * RETURN: None.
+ *
+ * DESCRIPTION: Delete a previously created mapping. Where and Length must
+ * correspond to a previous mapping exactly.
+ *
+ *****************************************************************************/
+
+void acpi_os_unmap_memory(void *where, acpi_size length)
+{
+
+ return;
+}
+#endif
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_os_allocate
+ *
+ * PARAMETERS: size - Amount to allocate, in bytes
+ *
+ * RETURN: Pointer to the new allocation. Null on error.
+ *
+ * DESCRIPTION: Allocate memory. Algorithm is dependent on the OS.
+ *
+ *****************************************************************************/
+
+void *acpi_os_allocate(acpi_size size)
+{
+ void *mem;
+
+ mem = (void *)malloc((size_t) size);
+ return (mem);
+}
+
+#ifdef USE_NATIVE_ALLOCATE_ZEROED
+/******************************************************************************
+ *
+ * FUNCTION: acpi_os_allocate_zeroed
+ *
+ * PARAMETERS: size - Amount to allocate, in bytes
+ *
+ * RETURN: Pointer to the new allocation. Null on error.
+ *
+ * DESCRIPTION: Allocate and zero memory. Algorithm is dependent on the OS.
+ *
+ *****************************************************************************/
+
+void *acpi_os_allocate_zeroed(acpi_size size)
+{
+ void *mem;
+
+ mem = (void *)calloc(1, (size_t) size);
+ return (mem);
+}
+#endif
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_os_free
+ *
+ * PARAMETERS: mem - Pointer to previously allocated memory
+ *
+ * RETURN: None.
+ *
+ * DESCRIPTION: Free memory allocated via acpi_os_allocate
+ *
+ *****************************************************************************/
+
+void acpi_os_free(void *mem)
+{
+
+ free(mem);
+}
+
+#ifdef ACPI_SINGLE_THREADED
+/******************************************************************************
+ *
+ * FUNCTION: Semaphore stub functions
+ *
+ * DESCRIPTION: Stub functions used for single-thread applications that do
+ * not require semaphore synchronization. Full implementations
+ * of these functions appear after the stubs.
+ *
+ *****************************************************************************/
+
+acpi_status
+acpi_os_create_semaphore(u32 max_units,
+ u32 initial_units, acpi_handle * out_handle)
+{
+ *out_handle = (acpi_handle) 1;
+ return (AE_OK);
+}
+
+acpi_status acpi_os_delete_semaphore(acpi_handle handle)
+{
+ return (AE_OK);
+}
+
+acpi_status acpi_os_wait_semaphore(acpi_handle handle, u32 units, u16 timeout)
+{
+ return (AE_OK);
+}
+
+acpi_status acpi_os_signal_semaphore(acpi_handle handle, u32 units)
+{
+ return (AE_OK);
+}
+
+#else
+/******************************************************************************
+ *
+ * FUNCTION: acpi_os_create_semaphore
+ *
+ * PARAMETERS: initial_units - Units to be assigned to the new semaphore
+ * out_handle - Where a handle will be returned
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Create an OS semaphore
+ *
+ *****************************************************************************/
+
+acpi_status
+acpi_os_create_semaphore(u32 max_units,
+ u32 initial_units, acpi_handle * out_handle)
+{
+ sem_t *sem;
+
+ if (!out_handle) {
+ return (AE_BAD_PARAMETER);
+ }
+#ifdef __APPLE__
+ {
+ char *semaphore_name = tmpnam(NULL);
+
+ sem =
+ sem_open(semaphore_name, O_EXCL | O_CREAT, 0755,
+ initial_units);
+ if (!sem) {
+ return (AE_NO_MEMORY);
+ }
+ sem_unlink(semaphore_name); /* This just deletes the name */
+ }
+
+#else
+ sem = acpi_os_allocate(sizeof(sem_t));
+ if (!sem) {
+ return (AE_NO_MEMORY);
+ }
+
+ if (sem_init(sem, 0, initial_units) == -1) {
+ acpi_os_free(sem);
+ return (AE_BAD_PARAMETER);
+ }
+#endif
+
+ *out_handle = (acpi_handle) sem;
+ return (AE_OK);
+}
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_os_delete_semaphore
+ *
+ * PARAMETERS: handle - Handle returned by acpi_os_create_semaphore
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Delete an OS semaphore
+ *
+ *****************************************************************************/
+
+acpi_status acpi_os_delete_semaphore(acpi_handle handle)
+{
+ sem_t *sem = (sem_t *) handle;
+
+ if (!sem) {
+ return (AE_BAD_PARAMETER);
+ }
+
+ if (sem_destroy(sem) == -1) {
+ return (AE_BAD_PARAMETER);
+ }
+
+ return (AE_OK);
+}
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_os_wait_semaphore
+ *
+ * PARAMETERS: handle - Handle returned by acpi_os_create_semaphore
+ * units - How many units to wait for
+ * msec_timeout - How long to wait (milliseconds)
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Wait for units
+ *
+ *****************************************************************************/
+
+acpi_status
+acpi_os_wait_semaphore(acpi_handle handle, u32 units, u16 msec_timeout)
+{
+ acpi_status status = AE_OK;
+ sem_t *sem = (sem_t *) handle;
+#ifndef ACPI_USE_ALTERNATE_TIMEOUT
+ struct timespec time;
+ int ret_val;
+#endif
+
+ if (!sem) {
+ return (AE_BAD_PARAMETER);
+ }
+
+ switch (msec_timeout) {
+ /*
+ * No Wait:
+ * --------
+ * A zero timeout value indicates that we shouldn't wait - just
+ * acquire the semaphore if available otherwise return AE_TIME
+ * (a.k.a. 'would block').
+ */
+ case 0:
+
+ if (sem_trywait(sem) == -1) {
+ status = (AE_TIME);
+ }
+ break;
+
+ /* Wait Indefinitely */
+
+ case ACPI_WAIT_FOREVER:
+
+ if (sem_wait(sem)) {
+ status = (AE_TIME);
+ }
+ break;
+
+ /* Wait with msec_timeout */
+
+ default:
+
+#ifdef ACPI_USE_ALTERNATE_TIMEOUT
+ /*
+ * Alternate timeout mechanism for environments where
+ * sem_timedwait is not available or does not work properly.
+ */
+ while (msec_timeout) {
+ if (sem_trywait(sem) == 0) {
+
+ /* Got the semaphore */
+ return (AE_OK);
+ }
+
+ if (msec_timeout >= 10) {
+ msec_timeout -= 10;
+ usleep(10 * ACPI_USEC_PER_MSEC); /* ten milliseconds */
+ } else {
+ msec_timeout--;
+ usleep(ACPI_USEC_PER_MSEC); /* one millisecond */
+ }
+ }
+ status = (AE_TIME);
+#else
+ /*
+ * The interface to sem_timedwait is an absolute time, so we need to
+ * get the current time, then add in the millisecond Timeout value.
+ */
+ if (clock_gettime(CLOCK_REALTIME, &time) == -1) {
+ perror("clock_gettime");
+ return (AE_TIME);
+ }
+
+ time.tv_sec += (msec_timeout / ACPI_MSEC_PER_SEC);
+ time.tv_nsec +=
+ ((msec_timeout % ACPI_MSEC_PER_SEC) * ACPI_NSEC_PER_MSEC);
+
+ /* Handle nanosecond overflow (field must be less than one second) */
+
+ if (time.tv_nsec >= ACPI_NSEC_PER_SEC) {
+ time.tv_sec += (time.tv_nsec / ACPI_NSEC_PER_SEC);
+ time.tv_nsec = (time.tv_nsec % ACPI_NSEC_PER_SEC);
+ }
+
+ while (((ret_val = sem_timedwait(sem, &time)) == -1)
+ && (errno == EINTR)) {
+ continue;
+ }
+
+ if (ret_val != 0) {
+ if (errno != ETIMEDOUT) {
+ perror("sem_timedwait");
+ }
+ status = (AE_TIME);
+ }
+#endif
+ break;
+ }
+
+ return (status);
+}
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_os_signal_semaphore
+ *
+ * PARAMETERS: handle - Handle returned by acpi_os_create_semaphore
+ * units - Number of units to send
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Send units
+ *
+ *****************************************************************************/
+
+acpi_status acpi_os_signal_semaphore(acpi_handle handle, u32 units)
+{
+ sem_t *sem = (sem_t *) handle;
+
+ if (!sem) {
+ return (AE_BAD_PARAMETER);
+ }
+
+ if (sem_post(sem) == -1) {
+ return (AE_LIMIT);
+ }
+
+ return (AE_OK);
+}
+
+#endif /* ACPI_SINGLE_THREADED */
+
+/******************************************************************************
+ *
+ * FUNCTION: Spinlock interfaces
+ *
+ * DESCRIPTION: Map these interfaces to semaphore interfaces
+ *
+ *****************************************************************************/
+
+acpi_status acpi_os_create_lock(acpi_spinlock * out_handle)
+{
+
+ return (acpi_os_create_semaphore(1, 1, out_handle));
+}
+
+void acpi_os_delete_lock(acpi_spinlock handle)
+{
+ acpi_os_delete_semaphore(handle);
+}
+
+acpi_cpu_flags acpi_os_acquire_lock(acpi_handle handle)
+{
+ acpi_os_wait_semaphore(handle, 1, 0xFFFF);
+ return (0);
+}
+
+void acpi_os_release_lock(acpi_spinlock handle, acpi_cpu_flags flags)
+{
+ acpi_os_signal_semaphore(handle, 1);
+}
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_os_install_interrupt_handler
+ *
+ * PARAMETERS: interrupt_number - Level handler should respond to.
+ * isr - Address of the ACPI interrupt handler
+ * except_ptr - Where status is returned
+ *
+ * RETURN: Handle to the newly installed handler.
+ *
+ * DESCRIPTION: Install an interrupt handler. Used to install the ACPI
+ * OS-independent handler.
+ *
+ *****************************************************************************/
+
+u32
+acpi_os_install_interrupt_handler(u32 interrupt_number,
+ acpi_osd_handler service_routine,
+ void *context)
+{
+
+ return (AE_OK);
+}
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_os_remove_interrupt_handler
+ *
+ * PARAMETERS: handle - Returned when handler was installed
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Uninstalls an interrupt handler.
+ *
+ *****************************************************************************/
+
+acpi_status
+acpi_os_remove_interrupt_handler(u32 interrupt_number,
+ acpi_osd_handler service_routine)
+{
+
+ return (AE_OK);
+}
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_os_stall
+ *
+ * PARAMETERS: microseconds - Time to sleep
+ *
+ * RETURN: Blocks until sleep is completed.
+ *
+ * DESCRIPTION: Sleep at microsecond granularity
+ *
+ *****************************************************************************/
+
+void acpi_os_stall(u32 microseconds)
+{
+
+ if (microseconds) {
+ usleep(microseconds);
+ }
+}
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_os_sleep
+ *
+ * PARAMETERS: milliseconds - Time to sleep
+ *
+ * RETURN: Blocks until sleep is completed.
+ *
+ * DESCRIPTION: Sleep at millisecond granularity
+ *
+ *****************************************************************************/
+
+void acpi_os_sleep(u64 milliseconds)
+{
+
+ /* Sleep for whole seconds */
+
+ sleep(milliseconds / ACPI_MSEC_PER_SEC);
+
+ /*
+ * Sleep for remaining microseconds.
+ * Arg to usleep() is in usecs and must be less than 1,000,000 (1 second).
+ */
+ usleep((milliseconds % ACPI_MSEC_PER_SEC) * ACPI_USEC_PER_MSEC);
+}
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_os_get_timer
+ *
+ * PARAMETERS: None
+ *
+ * RETURN: Current time in 100 nanosecond units
+ *
+ * DESCRIPTION: Get the current system time
+ *
+ *****************************************************************************/
+
+u64 acpi_os_get_timer(void)
+{
+ struct timeval time;
+
+ /* This timer has sufficient resolution for user-space application code */
+
+ gettimeofday(&time, NULL);
+
+ /* (Seconds * 10^7 = 100ns(10^-7)) + (Microseconds(10^-6) * 10^1 = 100ns) */
+
+ return (((u64)time.tv_sec * ACPI_100NSEC_PER_SEC) +
+ ((u64)time.tv_usec * ACPI_100NSEC_PER_USEC));
+}
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_os_read_pci_configuration
+ *
+ * PARAMETERS: pci_id - Seg/Bus/Dev
+ * pci_register - Device Register
+ * value - Buffer where value is placed
+ * width - Number of bits
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Read data from PCI configuration space
+ *
+ *****************************************************************************/
+
+acpi_status
+acpi_os_read_pci_configuration(struct acpi_pci_id *pci_id,
+ u32 pci_register, u64 *value, u32 width)
+{
+
+ *value = 0;
+ return (AE_OK);
+}
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_os_write_pci_configuration
+ *
+ * PARAMETERS: pci_id - Seg/Bus/Dev
+ * pci_register - Device Register
+ * value - Value to be written
+ * width - Number of bits
+ *
+ * RETURN: Status.
+ *
+ * DESCRIPTION: Write data to PCI configuration space
+ *
+ *****************************************************************************/
+
+acpi_status
+acpi_os_write_pci_configuration(struct acpi_pci_id * pci_id,
+ u32 pci_register, u64 value, u32 width)
+{
+
+ return (AE_OK);
+}
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_os_read_port
+ *
+ * PARAMETERS: address - Address of I/O port/register to read
+ * value - Where value is placed
+ * width - Number of bits
+ *
+ * RETURN: Value read from port
+ *
+ * DESCRIPTION: Read data from an I/O port or register
+ *
+ *****************************************************************************/
+
+acpi_status acpi_os_read_port(acpi_io_address address, u32 *value, u32 width)
+{
+
+ switch (width) {
+ case 8:
+
+ *value = 0xFF;
+ break;
+
+ case 16:
+
+ *value = 0xFFFF;
+ break;
+
+ case 32:
+
+ *value = 0xFFFFFFFF;
+ break;
+
+ default:
+
+ return (AE_BAD_PARAMETER);
+ }
+
+ return (AE_OK);
+}
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_os_write_port
+ *
+ * PARAMETERS: address - Address of I/O port/register to write
+ * value - Value to write
+ * width - Number of bits
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Write data to an I/O port or register
+ *
+ *****************************************************************************/
+
+acpi_status acpi_os_write_port(acpi_io_address address, u32 value, u32 width)
+{
+
+ return (AE_OK);
+}
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_os_read_memory
+ *
+ * PARAMETERS: address - Physical Memory Address to read
+ * value - Where value is placed
+ * width - Number of bits (8,16,32, or 64)
+ *
+ * RETURN: Value read from physical memory address. Always returned
+ * as a 64-bit integer, regardless of the read width.
+ *
+ * DESCRIPTION: Read data from a physical memory address
+ *
+ *****************************************************************************/
+
+acpi_status
+acpi_os_read_memory(acpi_physical_address address, u64 *value, u32 width)
+{
+
+ switch (width) {
+ case 8:
+ case 16:
+ case 32:
+ case 64:
+
+ *value = 0;
+ break;
+
+ default:
+
+ return (AE_BAD_PARAMETER);
+ }
+ return (AE_OK);
+}
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_os_write_memory
+ *
+ * PARAMETERS: address - Physical Memory Address to write
+ * value - Value to write
+ * width - Number of bits (8,16,32, or 64)
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Write data to a physical memory address
+ *
+ *****************************************************************************/
+
+acpi_status
+acpi_os_write_memory(acpi_physical_address address, u64 value, u32 width)
+{
+
+ return (AE_OK);
+}
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_os_readable
+ *
+ * PARAMETERS: pointer - Area to be verified
+ * length - Size of area
+ *
+ * RETURN: TRUE if readable for entire length
+ *
+ * DESCRIPTION: Verify that a pointer is valid for reading
+ *
+ *****************************************************************************/
+
+u8 acpi_os_readable(void *pointer, acpi_size length)
+{
+
+ return (TRUE);
+}
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_os_writable
+ *
+ * PARAMETERS: pointer - Area to be verified
+ * length - Size of area
+ *
+ * RETURN: TRUE if writable for entire length
+ *
+ * DESCRIPTION: Verify that a pointer is valid for writing
+ *
+ *****************************************************************************/
+
+u8 acpi_os_writable(void *pointer, acpi_size length)
+{
+
+ return (TRUE);
+}
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_os_signal
+ *
+ * PARAMETERS: function - ACPI A signal function code
+ * info - Pointer to function-dependent structure
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Miscellaneous functions. Example implementation only.
+ *
+ *****************************************************************************/
+
+acpi_status acpi_os_signal(u32 function, void *info)
+{
+
+ switch (function) {
+ case ACPI_SIGNAL_FATAL:
+
+ break;
+
+ case ACPI_SIGNAL_BREAKPOINT:
+
+ break;
+
+ default:
+
+ break;
+ }
+
+ return (AE_OK);
+}
+
+/* Optional multi-thread support */
+
+#ifndef ACPI_SINGLE_THREADED
+/******************************************************************************
+ *
+ * FUNCTION: acpi_os_get_thread_id
+ *
+ * PARAMETERS: None
+ *
+ * RETURN: Id of the running thread
+ *
+ * DESCRIPTION: Get the ID of the current (running) thread
+ *
+ *****************************************************************************/
+
+acpi_thread_id acpi_os_get_thread_id(void)
+{
+ pthread_t thread;
+
+ thread = pthread_self();
+ return (ACPI_CAST_PTHREAD_T(thread));
+}
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_os_execute
+ *
+ * PARAMETERS: type - Type of execution
+ * function - Address of the function to execute
+ * context - Passed as a parameter to the function
+ *
+ * RETURN: Status.
+ *
+ * DESCRIPTION: Execute a new thread
+ *
+ *****************************************************************************/
+
+acpi_status
+acpi_os_execute(acpi_execute_type type,
+ acpi_osd_exec_callback function, void *context)
+{
+ pthread_t thread;
+ int ret;
+
+ ret =
+ pthread_create(&thread, NULL, (PTHREAD_CALLBACK) function, context);
+ if (ret) {
+ acpi_os_printf("Create thread failed");
+ }
+ return (0);
+}
+
+#else /* ACPI_SINGLE_THREADED */
+acpi_thread_id acpi_os_get_thread_id(void)
+{
+ return (1);
+}
+
+acpi_status
+acpi_os_execute(acpi_execute_type type,
+ acpi_osd_exec_callback function, void *context)
+{
+
+ function(context);
+
+ return (AE_OK);
+}
+
+#endif /* ACPI_SINGLE_THREADED */
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_os_wait_events_complete
+ *
+ * PARAMETERS: None
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Wait for all asynchronous events to complete. This
+ * implementation does nothing.
+ *
+ *****************************************************************************/
+
+void acpi_os_wait_events_complete(void)
+{
+ return;
+}
projects / GitHub / LineageOS / G12 / android_kernel_amlogic_linux-4.9.git / commitdiff