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Diffstat (limited to 'src/drivers/storage/bouncebuf.c')
-rw-r--r--src/drivers/storage/bouncebuf.c92
1 files changed, 0 insertions, 92 deletions
diff --git a/src/drivers/storage/bouncebuf.c b/src/drivers/storage/bouncebuf.c
deleted file mode 100644
index c8125aaa42..0000000000
--- a/src/drivers/storage/bouncebuf.c
+++ /dev/null
@@ -1,92 +0,0 @@
-/*
- * Generic bounce buffer implementation
- *
- * Copyright (C) 2012 Marek Vasut <marex@denx.de>
- * Copyright 2013 Google Inc. 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.
- */
-
-#include <arch/cache.h>
-#include <console/console.h>
-#include "bouncebuf.h"
-#include <halt.h>
-#include "storage.h"
-#include <string.h>
-#include <commonlib/stdlib.h>
-
-static int addr_aligned(struct bounce_buffer *state)
-{
- const uint32_t align_mask = ARCH_DMA_MINALIGN - 1;
-
- // Check if start is aligned
- if ((uintptr_t)state->user_buffer & align_mask) {
- sdhc_debug("Unaligned buffer address %p\n", state->user_buffer);
- return 0;
- }
-
- // Check if length is aligned
- if (state->len != state->len_aligned) {
- sdhc_debug("Unaligned buffer length %zd\n", state->len);
- return 0;
- }
-
- // Aligned
- return 1;
-}
-
-int bounce_buffer_start(struct bounce_buffer *state, void *data,
- size_t len, unsigned int flags)
-{
- state->user_buffer = data;
- state->bounce_buffer = data;
- state->len = len;
- state->len_aligned = ROUND(len, ARCH_DMA_MINALIGN);
- state->flags = flags;
-
- if (!addr_aligned(state)) {
- state->bounce_buffer = memalign(ARCH_DMA_MINALIGN,
- state->len_aligned);
- if (!state->bounce_buffer)
- return -1;
-
- if (state->flags & GEN_BB_READ)
- memcpy(state->bounce_buffer, state->user_buffer,
- state->len);
- }
-
- /*
- * Flush data to RAM so DMA reads can pick it up,
- * and any CPU writebacks don't race with DMA writes
- */
- dcache_clean_invalidate_by_mva(state->bounce_buffer,
- state->len_aligned);
- return 0;
-}
-
-int bounce_buffer_stop(struct bounce_buffer *state)
-{
- if (state->flags & GEN_BB_WRITE) {
- // Invalidate cache so that CPU can see any newly DMA'd data
- dcache_invalidate_by_mva(state->bounce_buffer,
- state->len_aligned);
- }
-
- if (state->bounce_buffer == state->user_buffer)
- return 0;
-
- if (state->flags & GEN_BB_WRITE)
- memcpy(state->user_buffer, state->bounce_buffer, state->len);
-
- free(state->bounce_buffer);
-
- return 0;
-}