![Lin Ming](/assets/img/avatar_default.png)
http://bugzilla.kernel.org/show_bug.cgi?id=13620 If the dynamic region is created and added to resource list over and over again, it has the potential to be a memory leak by growing the list every time. This patch fixes the memory leak, as below 1) add a new field "count" to struct acpi_res_list. When inserting, if the region(addr, len) is already in the resource list, we just increase "count", otherwise, the region is inserted with count=1. When deleting, the "count" is decreased, if it's decreased to 0, the region is deleted from the resource list. With "count", the region with same address and length can only be inserted to the resource list once, so prevent potential memory leak. 2) add a new function acpi_os_invalidate_address, which is called when region is deleted. Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
288 lines
7.9 KiB
C
288 lines
7.9 KiB
C
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/******************************************************************************
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*
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* Name: acpiosxf.h - All interfaces to the OS Services Layer (OSL). These
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* interfaces must be implemented by OSL to interface the
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* ACPI components to the host operating system.
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2008, Intel Corp.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#ifndef __ACPIOSXF_H__
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#define __ACPIOSXF_H__
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#include "platform/acenv.h"
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#include "actypes.h"
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/* Types for acpi_os_execute */
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typedef enum {
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OSL_GLOBAL_LOCK_HANDLER,
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OSL_NOTIFY_HANDLER,
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OSL_GPE_HANDLER,
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OSL_DEBUGGER_THREAD,
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OSL_EC_POLL_HANDLER,
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OSL_EC_BURST_HANDLER
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} acpi_execute_type;
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#define ACPI_NO_UNIT_LIMIT ((u32) -1)
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#define ACPI_MUTEX_SEM 1
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/* Functions for acpi_os_signal */
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#define ACPI_SIGNAL_FATAL 0
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#define ACPI_SIGNAL_BREAKPOINT 1
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struct acpi_signal_fatal_info {
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u32 type;
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u32 code;
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u32 argument;
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};
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/*
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* OSL Initialization and shutdown primitives
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*/
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acpi_status __initdata acpi_os_initialize(void);
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acpi_status acpi_os_terminate(void);
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/*
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* ACPI Table interfaces
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*/
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acpi_physical_address acpi_os_get_root_pointer(void);
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acpi_status
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acpi_os_predefined_override(const struct acpi_predefined_names *init_val,
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acpi_string * new_val);
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acpi_status
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acpi_os_table_override(struct acpi_table_header *existing_table,
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struct acpi_table_header **new_table);
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/*
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* Spinlock primitives
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*/
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acpi_status acpi_os_create_lock(acpi_spinlock * out_handle);
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void acpi_os_delete_lock(acpi_spinlock handle);
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acpi_cpu_flags acpi_os_acquire_lock(acpi_spinlock handle);
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void acpi_os_release_lock(acpi_spinlock handle, acpi_cpu_flags flags);
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/*
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* Semaphore primitives
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*/
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acpi_status
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acpi_os_create_semaphore(u32 max_units,
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u32 initial_units, acpi_semaphore * out_handle);
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acpi_status acpi_os_delete_semaphore(acpi_semaphore handle);
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acpi_status
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acpi_os_wait_semaphore(acpi_semaphore handle, u32 units, u16 timeout);
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acpi_status acpi_os_signal_semaphore(acpi_semaphore handle, u32 units);
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/*
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* Mutex primitives. May be configured to use semaphores instead via
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* ACPI_MUTEX_TYPE (see platform/acenv.h)
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*/
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#if (ACPI_MUTEX_TYPE != ACPI_BINARY_SEMAPHORE)
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acpi_status acpi_os_create_mutex(acpi_mutex * out_handle);
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void acpi_os_delete_mutex(acpi_mutex handle);
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acpi_status acpi_os_acquire_mutex(acpi_mutex handle, u16 timeout);
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void acpi_os_release_mutex(acpi_mutex handle);
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#endif
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/*
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* Memory allocation and mapping
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*/
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void *acpi_os_allocate(acpi_size size);
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void __iomem *acpi_os_map_memory(acpi_physical_address where,
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acpi_size length);
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void acpi_os_unmap_memory(void __iomem * logical_address, acpi_size size);
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void early_acpi_os_unmap_memory(void __iomem * virt, acpi_size size);
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#ifdef ACPI_FUTURE_USAGE
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acpi_status
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acpi_os_get_physical_address(void *logical_address,
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acpi_physical_address * physical_address);
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#endif
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/*
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* Memory/Object Cache
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*/
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acpi_status
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acpi_os_create_cache(char *cache_name,
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u16 object_size,
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u16 max_depth, acpi_cache_t ** return_cache);
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acpi_status acpi_os_delete_cache(acpi_cache_t * cache);
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acpi_status acpi_os_purge_cache(acpi_cache_t * cache);
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void *acpi_os_acquire_object(acpi_cache_t * cache);
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acpi_status acpi_os_release_object(acpi_cache_t * cache, void *object);
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/*
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* Interrupt handlers
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*/
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acpi_status
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acpi_os_install_interrupt_handler(u32 gsi,
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acpi_osd_handler service_routine,
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void *context);
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acpi_status
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acpi_os_remove_interrupt_handler(u32 gsi, acpi_osd_handler service_routine);
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void acpi_os_gpe_count(u32 gpe_number);
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void acpi_os_fixed_event_count(u32 fixed_event_number);
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/*
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* Threads and Scheduling
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*/
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acpi_thread_id acpi_os_get_thread_id(void);
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acpi_status
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acpi_os_execute(acpi_execute_type type,
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acpi_osd_exec_callback function, void *context);
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acpi_status
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acpi_os_hotplug_execute(acpi_osd_exec_callback function, void *context);
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void acpi_os_wait_events_complete(void *context);
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void acpi_os_sleep(acpi_integer milliseconds);
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void acpi_os_stall(u32 microseconds);
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/*
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* Platform and hardware-independent I/O interfaces
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*/
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acpi_status acpi_os_read_port(acpi_io_address address, u32 * value, u32 width);
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acpi_status acpi_os_write_port(acpi_io_address address, u32 value, u32 width);
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/*
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* Platform and hardware-independent physical memory interfaces
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*/
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acpi_status
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acpi_os_read_memory(acpi_physical_address address, u32 * value, u32 width);
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acpi_status
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acpi_os_write_memory(acpi_physical_address address, u32 value, u32 width);
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/*
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* Platform and hardware-independent PCI configuration space access
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* Note: Can't use "Register" as a parameter, changed to "Reg" --
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* certain compilers complain.
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*/
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acpi_status
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acpi_os_read_pci_configuration(struct acpi_pci_id *pci_id,
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u32 reg, u32 *value, u32 width);
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acpi_status
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acpi_os_write_pci_configuration(struct acpi_pci_id *pci_id,
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u32 reg, acpi_integer value, u32 width);
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/*
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* Interim function needed for PCI IRQ routing
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*/
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void
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acpi_os_derive_pci_id(acpi_handle rhandle,
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acpi_handle chandle, struct acpi_pci_id **pci_id);
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/*
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* Miscellaneous
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*/
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acpi_status acpi_os_validate_interface(char *interface);
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acpi_status acpi_osi_invalidate(char* interface);
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acpi_status
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acpi_os_validate_address(u8 space_id, acpi_physical_address address,
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acpi_size length, char *name);
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acpi_status
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acpi_os_invalidate_address(u8 space_id, acpi_physical_address address,
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acpi_size length);
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u64 acpi_os_get_timer(void);
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acpi_status acpi_os_signal(u32 function, void *info);
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/*
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* Debug print routines
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*/
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void ACPI_INTERNAL_VAR_XFACE acpi_os_printf(const char *format, ...);
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void acpi_os_vprintf(const char *format, va_list args);
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void acpi_os_redirect_output(void *destination);
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#ifdef ACPI_FUTURE_USAGE
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/*
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* Debug input
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*/
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u32 acpi_os_get_line(char *buffer);
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#endif
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/*
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* Directory manipulation
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*/
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void *acpi_os_open_directory(char *pathname,
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char *wildcard_spec, char requested_file_type);
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/* requeste_file_type values */
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#define REQUEST_FILE_ONLY 0
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#define REQUEST_DIR_ONLY 1
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char *acpi_os_get_next_filename(void *dir_handle);
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void acpi_os_close_directory(void *dir_handle);
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#endif /* __ACPIOSXF_H__ */
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