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/*
* Copyright (c) 2006-2012. QLogic Corporation. All rights reserved.
* Copyright (c) 2003-2006, PathScale, Inc. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - 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.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "ips_recvq.h"
/* We return a table of pointer indexes.
*
* From the point of view of the returned pointer, index -1 always points to
* the address to call psmi_free on (since we force page-alignment).
*/
void **
ips_recvq_egrbuf_table_alloc(psm_ep_t ep, void *baseptr,
uint32_t chunksize,
uint32_t bufnum, uint32_t bufsize)
{
unsigned i;
uint32_t bufperchunk = chunksize / bufsize;
void *ptr_alloc;
uintptr_t *buft;
uintptr_t base = (uintptr_t) baseptr;
ptr_alloc = psmi_malloc(ep, UNDEFINED,
PSMI_PAGESIZE + sizeof(uintptr_t)*(bufnum+1));
if (ptr_alloc == NULL)
return NULL;
/* First pointer is to the actual allocated address, so we can free it but
* buft[1] is first on the page boundary
*/
buft = (uintptr_t *) PSMI_ALIGNUP(ptr_alloc+1, PSMI_PAGESIZE);
buft[-1] = (uintptr_t) ptr_alloc;
for (i=0; i<bufnum; i++)
buft[i] = base + (i / bufperchunk) * chunksize +
(i % bufperchunk) * bufsize;
return (void **)buft;
}
void
ips_recvq_egrbuf_table_free(void **buftable)
{
uintptr_t *buft = (uintptr_t *) buftable;
void *ptr_alloc = (void *) buft[-1];
psmi_free(ptr_alloc);
}
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