+// SPDX-License-Identifier: GPL-2.0+
/*
* Generic bounce buffer implementation
*
* Copyright (C) 2012 Marek Vasut <marex@denx.de>
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * 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., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
*/
#include <common.h>
+#include <cpu_func.h>
+#include <log.h>
#include <malloc.h>
#include <errno.h>
#include <bouncebuf.h>
+#include <asm/cache.h>
static int addr_aligned(struct bounce_buffer *state)
{
/* Check if length is aligned */
if (state->len != state->len_aligned) {
- debug("Unaligned buffer length %d\n", state->len);
+ debug("Unaligned buffer length %zu\n", state->len);
return 0;
}
return 1;
}
-int bounce_buffer_start(struct bounce_buffer *state, void *data,
- size_t len, unsigned int flags)
+int bounce_buffer_start_extalign(struct bounce_buffer *state, void *data,
+ size_t len, unsigned int flags,
+ size_t alignment,
+ int (*addr_is_aligned)(struct bounce_buffer *state))
{
state->user_buffer = data;
state->bounce_buffer = data;
state->len = len;
- state->len_aligned = roundup(len, ARCH_DMA_MINALIGN);
+ state->len_aligned = roundup(len, alignment);
state->flags = flags;
- if (!addr_aligned(state)) {
- state->bounce_buffer = memalign(ARCH_DMA_MINALIGN,
+ if (!addr_is_aligned(state)) {
+ state->bounce_buffer = memalign(alignment,
state->len_aligned);
if (!state->bounce_buffer)
return -ENOMEM;
return 0;
}
+int bounce_buffer_start(struct bounce_buffer *state, void *data,
+ size_t len, unsigned int flags)
+{
+ return bounce_buffer_start_extalign(state, data, len, flags,
+ ARCH_DMA_MINALIGN,
+ addr_aligned);
+}
+
int bounce_buffer_stop(struct bounce_buffer *state)
{
if (state->flags & GEN_BB_WRITE) {