rockbox/firmware/target/arm/rk27xx/system-target.h
Andrew Ryabinin 8618f2c227 rk27xx: sd: properly align buffer used for DMA transfers.
Commit 7d1a47cf ("Rewrite filesystem code (WIP)") exposed
bug in rk27xx sd driver. Buffer passed to sd_read/write_sectors()
doesn't has to be cacheline aligned. DMA transfers on
unaligned buffers is quiet dangerous thing.
Make sure that the buffer is aligned to cacheline size,
If not use a temporary aligned buffer for DMA transfer.

Change-Id: I91420f2b8d58159c80c3f15f4b35e88ea0dfd14c
2014-11-29 21:00:11 +03:00

57 lines
1.8 KiB
C

/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2008 Rafaël Carré
* Copyright (C) 2011 Marcin Bukat
*
* 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#ifndef SYSTEM_TARGET_H
#define SYSTEM_TARGET_H
#include "system-arm.h"
#include "panic.h"
void udelay(unsigned usecs);
static inline void mdelay(unsigned msecs)
{
udelay(1000 * msecs);
}
/* Datasheet is very cryptic how to use this.
* With cache enabled it simpy hangs here
*/
static inline void core_sleep(void)
{
enable_irq();
/* SCU_CPUPD = 0xdeedbabe; */
}
/* Write DCache back to RAM for the given range and remove cache lines
* from DCache afterwards */
void commit_discard_dcache_range(const void *base, unsigned int size);
static inline void commit_dcache(void) {}
void commit_discard_dcache(void);
void commit_discard_idcache(void);
#define CPUFREQ_DEFAULT 50000000
#define CPUFREQ_NORMAL 50000000
#define CPUFREQ_MAX 200000000
#define STORAGE_WANTS_ALIGN
#endif /* SYSTEM_TARGET_H */