6ec87da84f
Non of the .c files is using a function from console.h directly.
Include console.h is moved to sd_mmc.h, where sdhc_error("msg..") is
defined.
Change-Id: Ic9283f227a37785056b9fac216fabcac054066a0
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/26752
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
91 lines
2.3 KiB
C
91 lines
2.3 KiB
C
/*
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* Generic bounce buffer implementation
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*
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* Copyright (C) 2012 Marek Vasut <marex@denx.de>
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* Copyright 2013 Google Inc. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <arch/cache.h>
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#include "bouncebuf.h"
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#include <halt.h>
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#include "storage.h"
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#include <string.h>
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#include <commonlib/stdlib.h>
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static int addr_aligned(struct bounce_buffer *state)
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{
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const uint32_t align_mask = ARCH_DMA_MINALIGN - 1;
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// Check if start is aligned
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if ((uintptr_t)state->user_buffer & align_mask) {
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sdhc_debug("Unaligned buffer address %p\n", state->user_buffer);
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return 0;
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}
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// Check if length is aligned
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if (state->len != state->len_aligned) {
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sdhc_debug("Unaligned buffer length %zd\n", state->len);
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return 0;
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}
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// Aligned
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return 1;
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}
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int bounce_buffer_start(struct bounce_buffer *state, void *data,
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size_t len, unsigned int flags)
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{
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state->user_buffer = data;
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state->bounce_buffer = data;
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state->len = len;
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state->len_aligned = ROUND(len, ARCH_DMA_MINALIGN);
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state->flags = flags;
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if (!addr_aligned(state)) {
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state->bounce_buffer = memalign(ARCH_DMA_MINALIGN,
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state->len_aligned);
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if (!state->bounce_buffer)
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return -1;
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if (state->flags & GEN_BB_READ)
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memcpy(state->bounce_buffer, state->user_buffer,
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state->len);
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}
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/*
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* Flush data to RAM so DMA reads can pick it up,
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* and any CPU writebacks don't race with DMA writes
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*/
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dcache_clean_invalidate_by_mva(state->bounce_buffer,
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state->len_aligned);
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return 0;
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}
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int bounce_buffer_stop(struct bounce_buffer *state)
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{
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if (state->flags & GEN_BB_WRITE) {
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// Invalidate cache so that CPU can see any newly DMA'd data
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dcache_invalidate_by_mva(state->bounce_buffer,
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state->len_aligned);
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}
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if (state->bounce_buffer == state->user_buffer)
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return 0;
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if (state->flags & GEN_BB_WRITE)
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memcpy(state->user_buffer, state->bounce_buffer, state->len);
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free(state->bounce_buffer);
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return 0;
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}
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