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linux_dsm_epyc7002/include/acpi/acpiosxf.h
Lv Zheng f8d3148962 ACPICA: Debugger: Convert some mechanisms to OSPM specific 
The following mechanisms are OSPM specific:
1. Redirect output destination to console: no file redirection will be
   needed by an in-kernel debugger, there is even no file can be accessed
   when the debugger is running in the kernel mode.
2. Output command prompts: programs other than acpiexec can have different
   prompt characters and the prompt characters may be implemented as a
   special character sequence to form a char device IO protocol.
3. Command ready/complete handshake: OSPM debugger may wait more conditions
   to implement OSPM specific semantics (for example, FIFO full/empty
   conditions for O_NONBLOCK or IO open/close conditions).
Leaving such OSPM specific stuffs in the ACPICA debugger core blocks
Linux debugger IO driver implementation.

Several new OSL APIs are provided by this patch:
1. acpi_os_initialize_command_signals: initialize command handshake mechanism
   or any other OSPM specific stuffs.
2. acpi_os_terminate_command_signals: reversal of
   acpi_os_initialize_command_signals.
3. acpi_os_wait_command_ready: putting debugger task into wait state when a
   command is not ready. OSPMs can terminate command loop by returning
   AE_CTRL_TERMINATE from this API. Normally, wait_event() or
   wait_for_multiple_object() may be used to implement this API.
4. acpi_os_notify_command_complete: putting user task into running state when a
   command has been completed. OSPMs can terminate command loop by
   returning AE_CTRL_TERMINATE from this API. Normally, wake_up() or
   set_event() may be used to implement this API.
This patch also converts current command signaling implementation into a
generic debugger layer (osgendbg.c) to be used by the existing OSPMs or
acpiexec, in return, Linux can have chance to implement its own command
handshake mechanism. This patch also implements acpiexec batch mode in a
multi-threading mode comaptible style as a demo (this can be confirmed by
configuring acpiexec into DEBUGGER_MULTI_THREADED mode where the batch mode
is still working). Lv Zheng.

Note that the OSPM specific command handshake mechanism is required by
Linux kernel because:
1. Linux kernel trends to use wait queue to synchronize two threads, using
   mutexes to achieve that will cause false "dead lock" warnings.
2. The command handshake mechanism implemented by ACPICA is implemented in
   this way because of a design issue in debugger IO streaming. Debugger IO
   outputs are simply cached using a giant buffer, this should be tuned by
   Linux in the future.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-12-15 00:17:43 +01:00

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/******************************************************************************
*
* Name: acpiosxf.h - All interfaces to the OS Services Layer (OSL). These
* interfaces must be implemented by OSL to interface the
* ACPI components to the host operating system.
*
*****************************************************************************/
/*
* Copyright (C) 2000 - 2015, 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.
*/
#ifndef __ACPIOSXF_H__
#define __ACPIOSXF_H__
#include <acpi/platform/acenv.h>
#include <acpi/actypes.h>
/* Types for acpi_os_execute */
typedef enum {
OSL_GLOBAL_LOCK_HANDLER,
OSL_NOTIFY_HANDLER,
OSL_GPE_HANDLER,
OSL_DEBUGGER_MAIN_THREAD,
OSL_DEBUGGER_EXEC_THREAD,
OSL_EC_POLL_HANDLER,
OSL_EC_BURST_HANDLER
} acpi_execute_type;
#define ACPI_NO_UNIT_LIMIT ((u32) -1)
#define ACPI_MUTEX_SEM 1
/* Functions for acpi_os_signal */
#define ACPI_SIGNAL_FATAL 0
#define ACPI_SIGNAL_BREAKPOINT 1
struct acpi_signal_fatal_info {
u32 type;
u32 code;
u32 argument;
};
/*
* OSL Initialization and shutdown primitives
*/
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_initialize
acpi_status acpi_os_initialize(void);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_terminate
acpi_status acpi_os_terminate(void);
#endif
/*
* ACPI Table interfaces
*/
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_root_pointer
acpi_physical_address acpi_os_get_root_pointer(void);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_predefined_override
acpi_status
acpi_os_predefined_override(const struct acpi_predefined_names *init_val,
char **new_val);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_table_override
acpi_status
acpi_os_table_override(struct acpi_table_header *existing_table,
struct acpi_table_header **new_table);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_physical_table_override
acpi_status
acpi_os_physical_table_override(struct acpi_table_header *existing_table,
acpi_physical_address * new_address,
u32 *new_table_length);
#endif
/*
* Spinlock primitives
*/
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_create_lock
acpi_status acpi_os_create_lock(acpi_spinlock * out_handle);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_delete_lock
void acpi_os_delete_lock(acpi_spinlock handle);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_acquire_lock
acpi_cpu_flags acpi_os_acquire_lock(acpi_spinlock handle);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_release_lock
void acpi_os_release_lock(acpi_spinlock handle, acpi_cpu_flags flags);
#endif
/*
* Semaphore primitives
*/
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_create_semaphore
acpi_status
acpi_os_create_semaphore(u32 max_units,
u32 initial_units, acpi_semaphore * out_handle);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_delete_semaphore
acpi_status acpi_os_delete_semaphore(acpi_semaphore handle);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_wait_semaphore
acpi_status
acpi_os_wait_semaphore(acpi_semaphore handle, u32 units, u16 timeout);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_signal_semaphore
acpi_status acpi_os_signal_semaphore(acpi_semaphore handle, u32 units);
#endif
/*
* Mutex primitives. May be configured to use semaphores instead via
* ACPI_MUTEX_TYPE (see platform/acenv.h)
*/
#if (ACPI_MUTEX_TYPE != ACPI_BINARY_SEMAPHORE)
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_create_mutex
acpi_status acpi_os_create_mutex(acpi_mutex * out_handle);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_delete_mutex
void acpi_os_delete_mutex(acpi_mutex handle);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_acquire_mutex
acpi_status acpi_os_acquire_mutex(acpi_mutex handle, u16 timeout);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_release_mutex
void acpi_os_release_mutex(acpi_mutex handle);
#endif
#endif
/*
* Memory allocation and mapping
*/
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_allocate
void *acpi_os_allocate(acpi_size size);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_allocate_zeroed
void *acpi_os_allocate_zeroed(acpi_size size);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_free
void acpi_os_free(void *memory);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_map_memory
void *acpi_os_map_memory(acpi_physical_address where, acpi_size length);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_unmap_memory
void acpi_os_unmap_memory(void *logical_address, acpi_size size);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_physical_address
acpi_status
acpi_os_get_physical_address(void *logical_address,
acpi_physical_address * physical_address);
#endif
/*
* Memory/Object Cache
*/
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_create_cache
acpi_status
acpi_os_create_cache(char *cache_name,
u16 object_size,
u16 max_depth, acpi_cache_t ** return_cache);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_delete_cache
acpi_status acpi_os_delete_cache(acpi_cache_t * cache);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_purge_cache
acpi_status acpi_os_purge_cache(acpi_cache_t * cache);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_acquire_object
void *acpi_os_acquire_object(acpi_cache_t * cache);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_release_object
acpi_status acpi_os_release_object(acpi_cache_t * cache, void *object);
#endif
/*
* Interrupt handlers
*/
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_install_interrupt_handler
acpi_status
acpi_os_install_interrupt_handler(u32 interrupt_number,
acpi_osd_handler service_routine,
void *context);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_remove_interrupt_handler
acpi_status
acpi_os_remove_interrupt_handler(u32 interrupt_number,
acpi_osd_handler service_routine);
#endif
/*
* Threads and Scheduling
*/
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_thread_id
acpi_thread_id acpi_os_get_thread_id(void);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_execute
acpi_status
acpi_os_execute(acpi_execute_type type,
acpi_osd_exec_callback function, void *context);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_wait_events_complete
void acpi_os_wait_events_complete(void);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_sleep
void acpi_os_sleep(u64 milliseconds);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_stall
void acpi_os_stall(u32 microseconds);
#endif
/*
* Platform and hardware-independent I/O interfaces
*/
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_read_port
acpi_status acpi_os_read_port(acpi_io_address address, u32 *value, u32 width);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_write_port
acpi_status acpi_os_write_port(acpi_io_address address, u32 value, u32 width);
#endif
/*
* Platform and hardware-independent physical memory interfaces
*/
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_read_memory
acpi_status
acpi_os_read_memory(acpi_physical_address address, u64 *value, u32 width);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_write_memory
acpi_status
acpi_os_write_memory(acpi_physical_address address, u64 value, u32 width);
#endif
/*
* Platform and hardware-independent PCI configuration space access
* Note: Can't use "Register" as a parameter, changed to "Reg" --
* certain compilers complain.
*/
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_read_pci_configuration
acpi_status
acpi_os_read_pci_configuration(struct acpi_pci_id *pci_id,
u32 reg, u64 *value, u32 width);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_write_pci_configuration
acpi_status
acpi_os_write_pci_configuration(struct acpi_pci_id *pci_id,
u32 reg, u64 value, u32 width);
#endif
/*
* Miscellaneous
*/
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_readable
u8 acpi_os_readable(void *pointer, acpi_size length);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_writable
u8 acpi_os_writable(void *pointer, acpi_size length);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_timer
u64 acpi_os_get_timer(void);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_signal
acpi_status acpi_os_signal(u32 function, void *info);
#endif
/*
* Debug print routines
*/
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_printf
void ACPI_INTERNAL_VAR_XFACE acpi_os_printf(const char *format, ...);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_vprintf
void acpi_os_vprintf(const char *format, va_list args);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_redirect_output
void acpi_os_redirect_output(void *destination);
#endif
/*
* Debug IO
*/
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_line
acpi_status acpi_os_get_line(char *buffer, u32 buffer_length, u32 *bytes_read);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_initialize_command_signals
acpi_status acpi_os_initialize_command_signals(void);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_terminate_command_signals
void acpi_os_terminate_command_signals(void);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_wait_command_ready
acpi_status acpi_os_wait_command_ready(void);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_notify_command_complete
acpi_status acpi_os_notify_command_complete(void);
#endif
/*
* Obtain ACPI table(s)
*/
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_table_by_name
acpi_status
acpi_os_get_table_by_name(char *signature,
u32 instance,
struct acpi_table_header **table,
acpi_physical_address * address);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_table_by_index
acpi_status
acpi_os_get_table_by_index(u32 index,
struct acpi_table_header **table,
u32 *instance, acpi_physical_address * address);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_table_by_address
acpi_status
acpi_os_get_table_by_address(acpi_physical_address address,
struct acpi_table_header **table);
#endif
/*
* Directory manipulation
*/
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_open_directory
void *acpi_os_open_directory(char *pathname,
char *wildcard_spec, char requested_file_type);
#endif
/* requeste_file_type values */
#define REQUEST_FILE_ONLY 0
#define REQUEST_DIR_ONLY 1
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_next_filename
char *acpi_os_get_next_filename(void *dir_handle);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_close_directory
void acpi_os_close_directory(void *dir_handle);
#endif
/*
* File I/O and related support
*/
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_open_file
ACPI_FILE acpi_os_open_file(const char *path, u8 modes);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_close_file
void acpi_os_close_file(ACPI_FILE file);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_read_file
int
acpi_os_read_file(ACPI_FILE file,
void *buffer, acpi_size size, acpi_size count);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_write_file
int
acpi_os_write_file(ACPI_FILE file,
void *buffer, acpi_size size, acpi_size count);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_file_offset
long acpi_os_get_file_offset(ACPI_FILE file);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_set_file_offset
acpi_status acpi_os_set_file_offset(ACPI_FILE file, long offset, u8 from);
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_trace_point
void
acpi_os_trace_point(acpi_trace_event_type type,
u8 begin, u8 *aml, char *pathname);
#endif
#endif /* __ACPIOSXF_H__ */
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