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/* (C) 2008-2010 by Harald Welte <laforge@gnumonks.org>
* All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <asm/system.h>
#include <debug.h>
#include <delay.h>
#include <console.h>
#include <osmocom/core/msgb.h>
#define NO_TALLOC
void *tall_msgb_ctx;
#ifdef NO_TALLOC
/* This is a poor mans static allocator for msgb objects */
#define MSGB_DATA_SIZE 256+4
#define MSGB_NUM 32
struct supermsg {
uint8_t allocated;
struct msgb msg;
uint8_t buf[MSGB_DATA_SIZE];
};
static struct supermsg msgs[MSGB_NUM];
void *_talloc_zero(void *ctx, unsigned int size, const char *name)
{
unsigned long flags;
unsigned int i;
local_firq_save(flags);
if (size > sizeof(struct msgb) + MSGB_DATA_SIZE)
goto panic;
for (i = 0; i < ARRAY_SIZE(msgs); i++) {
if (!msgs[i].allocated) {
msgs[i].allocated = 1;
memset(&msgs[i].msg, 0, sizeof(msgs[i].msg));
memset(&msgs[i].buf, 0, sizeof(msgs[i].buf));
local_irq_restore(flags);
return &msgs[i].msg;
}
}
panic:
cons_puts("unable to allocate msgb\n");
while (1);
return NULL; /* not reached */
}
void talloc_free(void *msg)
{
struct supermsg *smsg = container_of(msg, struct supermsg, msg);
/* no locking required, since this is atomic */
smsg->allocated = 0;
}
#endif
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