mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-27 11:55:06 +00:00
b1526b43e8
device drivers. Recent versions of u-boot run with the MMU enabled, and require DMA-based I/O to be aligned to cache line boundaries. These changes are based on a patch originally submitted by Juergen Weiss, but I reworked them and thus any problems are purely my fault. Submitted by: "Juergen Weiss" <weiss@uni-mainz.de> Reviewed by: imp, nwhitehorn, jhb
79 lines
2.5 KiB
C
79 lines
2.5 KiB
C
/*
|
|
* This module derived from code donated to the FreeBSD Project by
|
|
* Matthew Dillon <dillon@backplane.com>
|
|
*
|
|
* Copyright (c) 1998 The FreeBSD Project
|
|
* 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
/*
|
|
* DEFS.H
|
|
*/
|
|
|
|
#define USEGUARD /* use stard/end guard bytes */
|
|
#define USEENDGUARD
|
|
#define DMALLOCDEBUG /* add debugging code to gather stats */
|
|
#define ZALLOCDEBUG
|
|
|
|
#include <sys/stdint.h>
|
|
#include "stand.h"
|
|
#include "zalloc_mem.h"
|
|
|
|
#define Library extern
|
|
|
|
/*
|
|
* block extension for sbrk()
|
|
*/
|
|
|
|
#define BLKEXTEND (4 * 1024)
|
|
#define BLKEXTENDMASK (BLKEXTEND - 1)
|
|
|
|
/*
|
|
* Required malloc alignment.
|
|
*
|
|
* Embedded platforms using the u-boot API drivers require that all I/O buffers
|
|
* be on a cache line sized boundary. The worst case size for that is 64 bytes.
|
|
* For other platforms, 16 bytes works fine. The alignment also must be at
|
|
* least sizeof(struct MemNode); this is asserted in zalloc.c.
|
|
*/
|
|
|
|
#if defined(__arm__) || defined(__mips__) || defined(__powerpc__)
|
|
#define MALLOCALIGN 64
|
|
#else
|
|
#define MALLOCALIGN 16
|
|
#endif
|
|
#define MALLOCALIGN_MASK (MALLOCALIGN - 1)
|
|
|
|
typedef struct Guard {
|
|
size_t ga_Bytes;
|
|
size_t ga_Magic; /* must be at least 32 bits */
|
|
} Guard;
|
|
|
|
#define GAMAGIC 0x55FF44FD
|
|
#define GAFREE 0x5F54F4DF
|
|
|
|
#include "zalloc_protos.h"
|