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/*
* heapbufmp.h
*
* Heap module manages fixed size buffers that can be used
* in a multiprocessor system with shared memory.
*
* Copyright (C) 2008-2009 Texas Instruments, Inc.
*
* This package is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
* PURPOSE.
*/
#ifndef _HEAPBUFMP_H_
#define _HEAPBUFMP_H_
#include <linux/types.h>
#include <heap.h>
#include <listmp.h>
/*!
* @def LISTMP_MODULEID
* @brief Unique module ID.
*/
#define HEAPBUFMP_MODULEID (0x4cd5)
/*
* Creation of Heap Buf succesful.
*/
#define HEAPBUFMP_CREATED (0x05251995)
/*
* Version.
*/
#define HEAPBUFMP_VERSION (1)
/* =============================================================================
* All success and failure codes for the module
* =============================================================================
*/
/*!
* @def HEAPBUFMP_S_BUSY
* @brief The resource is still in use
*/
#define HEAPBUFMP_S_BUSY 2
/*!
* @def HEAPBUFMP_S_ALREADYSETUP
* @brief The module has been already setup
*/
#define HEAPBUFMP_S_ALREADYSETUP 1
/*!
* @def HEAPBUFMP_S_SUCCESS
* @brief Operation is successful.
*/
#define HEAPBUFMP_S_SUCCESS 0
/*!
* @def HEAPBUFMP_E_FAIL
* @brief Generic failure.
*/
#define HEAPBUFMP_E_FAIL -1
/*!
* @def HEAPBUFMP_E_INVALIDARG
* @brief Argument passed to function is invalid.
*/
#define HEAPBUFMP_E_INVALIDARG -2
/*!
* @def HEAPBUFMP_E_MEMORY
* @brief Operation resulted in memory failure.
*/
#define HEAPBUFMP_E_MEMORY -3
/*!
* @def HEAPBUFMP_E_ALREADYEXISTS
* @brief The specified entity already exists.
*/
#define HEAPBUFMP_E_ALREADYEXISTS -4
/*!
* @def HEAPBUFMP_E_NOTFOUND
* @brief Unable to find the specified entity.
*/
#define HEAPBUFMP_E_NOTFOUND -5
/*!
* @def HEAPBUFMP_E_TIMEOUT
* @brief Operation timed out.
*/
#define HEAPBUFMP_E_TIMEOUT -6
/*!
* @def HEAPBUFMP_E_INVALIDSTATE
* @brief Module is not initialized.
*/
#define HEAPBUFMP_E_INVALIDSTATE -7
/*!
* @def HEAPBUFMP_E_OSFAILURE
* @brief A failure occurred in an OS-specific call */
#define HEAPBUFMP_E_OSFAILURE -8
/*!
* @def HEAPBUFMP_E_RESOURCE
* @brief Specified resource is not available */
#define HEAPBUFMP_E_RESOURCE -9
/*!
* @def HEAPBUFMP_E_RESTART
* @brief Operation was interrupted. Please restart the operation */
#define HEAPBUFMP_E_RESTART -10
/* =============================================================================
* Macros
* =============================================================================
*/
/* =============================================================================
* Structures & Enums
* =============================================================================
*/
/*
* Structure defining config parameters for the HeapBuf module.
*/
struct heapbufmp_config {
u32 max_name_len; /* Maximum length of name */
u32 max_runtime_entries; /* Maximum number of heapbufmp instances */
/* that can be created */
bool track_allocs; /* Track the maximum number of allocated */
/* blocks */
};
/*
* Structure defining parameters for the HeapBuf module
*/
struct heapbufmp_params {
char *name; /* Name of this instance */
u16 region_id; /* Shared region ID */
void *shared_addr; /* Physical address of the shared memory */
u32 block_size; /* Size (in MAUs) of each block */
u32 num_blocks; /* Number of fixed-size blocks */
u32 align; /* Alignment (in MAUs, power of 2) of each block */
bool exact; /* Only allocate on exact match of rquested size */
void *gate; /* GateMP used for critical region management of */
/* the shared memory */
};
/*
* Stats structure for the getExtendedStats API.
*/
struct heapbufmp_extended_stats {
u32 max_allocated_blocks;
/* maximum number of blocks allocated from this heap instance */
u32 num_allocated_blocks;
/* total number of blocks currently allocated from this heap instance*/
};
/* =============================================================================
* APIs
* =============================================================================
*/
/*
* Function to get default configuration for the heapbufmp module
*/
int heapbufmp_get_config(struct heapbufmp_config *cfgparams);
/*
* Function to setup the heapbufmp module
*/
int heapbufmp_setup(const struct heapbufmp_config *cfg);
/*
* Function to destroy the heapbufmp module
*/
int heapbufmp_destroy(void);
/* Initialize this config-params structure with supplier-specified
* defaults before instance creation
*/
void heapbufmp_params_init(struct heapbufmp_params *params);
/*
* Creates a new instance of heapbufmp module
*/
void *heapbufmp_create(const struct heapbufmp_params *params);
/*
* Deletes a instance of heapbufmp module
*/
int heapbufmp_delete(void **handle_ptr);
/*
* Opens a created instance of heapbufmp module by name
*/
int heapbufmp_open(char *name, void **handle_ptr);
/*
* Opens a created instance of heapbufmp module by address
*/
int heapbufmp_open_by_addr(void *shared_addr, void **handle_ptr);
/*
* Closes previously opened/created instance of heapbufmp module
*/
int heapbufmp_close(void **handle_ptr);
/*
* Returns the amount of shared memory required for creation
* of each instance
*/
int heapbufmp_shared_mem_req(const struct heapbufmp_params *params);
/*
* Allocate a block
*/
void *heapbufmp_alloc(void *hphandle, u32 size, u32 align);
/*
* Frees the block to this heapbufmp
*/
int heapbufmp_free(void *hphandle, void *block, u32 size);
/*
* Get memory statistics
*/
void heapbufmp_get_stats(void *hphandle, struct memory_stats *stats);
/*
* Indicate whether the heap may block during an alloc or free call
*/
bool heapbufmp_isblocking(void *handle);
/*
* Get extended statistics
*/
void heapbufmp_get_extended_stats(void *hphandle,
struct heapbufmp_extended_stats *stats);
#endif /* _HEAPBUFMP_H_ */
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