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/*-
* Copyright (c) 2002-2007 Neterion, Inc.
* 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.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, 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 DAMAGE.
*
* $FreeBSD$
*/
/*
* FileName : xgehal-mm.h
*
* Description: memory pool object
*
* Created: 28 May 2004
*/
#ifndef XGE_HAL_MM_H
#define XGE_HAL_MM_H
#include <dev/nxge/include/xge-os-pal.h>
#include <dev/nxge/include/xge-debug.h>
#include <dev/nxge/include/xgehal-types.h>
#include <dev/nxge/include/xgehal-driver.h>
__EXTERN_BEGIN_DECLS
typedef void* xge_hal_mempool_h;
/*
* struct xge_hal_mempool_dma_t - Represents DMA objects passed to the
caller.
*/
typedef struct xge_hal_mempool_dma_t {
dma_addr_t addr;
pci_dma_h handle;
pci_dma_acc_h acc_handle;
} xge_hal_mempool_dma_t;
/*
* xge_hal_mempool_item_f - Mempool item alloc/free callback
* @mempoolh: Memory pool handle.
* @item: Item that gets allocated or freed.
* @index: Item's index in the memory pool.
* @is_last: True, if this item is the last one in the pool; false - otherwise.
* userdat: Per-pool user context.
*
* Memory pool allocation/deallocation callback.
*/
typedef xge_hal_status_e (*xge_hal_mempool_item_f) (xge_hal_mempool_h mempoolh,
void *memblock, int memblock_index,
xge_hal_mempool_dma_t *dma_object, void *item,
int index, int is_last, void *userdata);
/*
* struct xge_hal_mempool_t - Memory pool.
*/
typedef struct xge_hal_mempool_t {
xge_hal_mempool_item_f item_func_alloc;
xge_hal_mempool_item_f item_func_free;
void *userdata;
void **memblocks_arr;
void **memblocks_priv_arr;
xge_hal_mempool_dma_t *memblocks_dma_arr;
pci_dev_h pdev;
int memblock_size;
int memblocks_max;
int memblocks_allocated;
int item_size;
int items_max;
int items_initial;
int items_current;
int items_per_memblock;
void **items_arr;
void **shadow_items_arr;
int items_priv_size;
} xge_hal_mempool_t;
/*
* __hal_mempool_item - Returns pointer to the item in the mempool
* items array.
*/
static inline void*
__hal_mempool_item(xge_hal_mempool_t *mempool, int index)
{
return mempool->items_arr[index];
}
/*
* __hal_mempool_item_priv - will return pointer on per item private space
*/
static inline void*
__hal_mempool_item_priv(xge_hal_mempool_t *mempool, int memblock_idx,
void *item, int *memblock_item_idx)
{
ptrdiff_t offset;
void *memblock = mempool->memblocks_arr[memblock_idx];
xge_assert(memblock);
offset = (int)((char * )item - (char *)memblock);
xge_assert(offset >= 0 && offset < mempool->memblock_size);
(*memblock_item_idx) = (int) offset / mempool->item_size;
xge_assert((*memblock_item_idx) < mempool->items_per_memblock);
return (char*)mempool->memblocks_priv_arr[memblock_idx] +
(*memblock_item_idx) * mempool->items_priv_size;
}
/*
* __hal_mempool_items_arr - will return pointer to the items array in the
* mempool.
*/
static inline void*
__hal_mempool_items_arr(xge_hal_mempool_t *mempool)
{
return mempool->items_arr;
}
/*
* __hal_mempool_memblock - will return pointer to the memblock in the
* mempool memblocks array.
*/
static inline void*
__hal_mempool_memblock(xge_hal_mempool_t *mempool, int memblock_idx)
{
xge_assert(mempool->memblocks_arr[memblock_idx]);
return mempool->memblocks_arr[memblock_idx];
}
/*
* __hal_mempool_memblock_dma - will return pointer to the dma block
* corresponds to the memblock(identified by memblock_idx) in the mempool.
*/
static inline xge_hal_mempool_dma_t*
__hal_mempool_memblock_dma(xge_hal_mempool_t *mempool, int memblock_idx)
{
return mempool->memblocks_dma_arr + memblock_idx;
}
xge_hal_status_e __hal_mempool_grow(xge_hal_mempool_t *mempool,
int num_allocate, int *num_allocated);
xge_hal_mempool_t* __hal_mempool_create(pci_dev_h pdev, int memblock_size,
int item_size, int private_size, int items_initial,
int items_max, xge_hal_mempool_item_f item_func_alloc,
xge_hal_mempool_item_f item_func_free, void *userdata);
void __hal_mempool_destroy(xge_hal_mempool_t *mempool);
__EXTERN_END_DECLS
#endif /* XGE_HAL_MM_H */
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