commonlib: Move drivers/storage into commonlib/storage
Move drivers/storage into commonlib/storage to enable access by libpayload and indirectly by payloads. * Remove SD/MMC specific include files from include/device * Remove files from drivers/storage * Add SD/MMC specific include files to commonlib/include * Add files to commonlib/storage * Fix header file references * Add subdir entry in commonlib/Makefile.inc to build the SD/MMC driver * Add Kconfig source for commonlib/storage * Rename *DEVICE* to *COMMONLIB* * Rename *DRIVERS_STORAGE* to *COMMONLIB_STORAGE* TEST=Build and run on Galileo Gen2 Change-Id: I4339e4378491db9a0da1f2dc34e1906a5ba31ad6 Signed-off-by: Lee Leahy <Leroy.P.Leahy@intel.com> Reviewed-on: https://review.coreboot.org/19672 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
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src/commonlib/storage/bouncebuf.h
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src/commonlib/storage/bouncebuf.h
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/*
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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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#ifndef __COMMONLIB_STORAGE_BOUNCEBUF_H__
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#define __COMMONLIB_STORAGE_BOUNCEBUF_H__
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#include <stddef.h>
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#include <stdint.h>
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#include <stdlib.h>
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/*
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* GEN_BB_READ -- Data are read from the buffer eg. by DMA hardware.
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* The source buffer is copied into the bounce buffer (if unaligned, otherwise
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* the source buffer is used directly) upon start() call, then the operation
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* requiring the aligned transfer happens, then the bounce buffer is lost upon
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* stop() call.
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*/
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#define GEN_BB_READ (1 << 0)
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/*
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* GEN_BB_WRITE -- Data are written into the buffer eg. by DMA hardware.
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* The source buffer starts in an undefined state upon start() call, then the
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* operation requiring the aligned transfer happens, then the bounce buffer is
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* copied into the destination buffer (if unaligned, otherwise destination
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* buffer is used directly) upon stop() call.
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*/
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#define GEN_BB_WRITE (1 << 1)
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/*
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* GEN_BB_RW -- Data are read and written into the buffer eg. by DMA hardware.
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* The source buffer is copied into the bounce buffer (if unaligned, otherwise
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* the source buffer is used directly) upon start() call, then the operation
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* requiring the aligned transfer happens, then the bounce buffer is copied
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* into the destination buffer (if unaligned, otherwise destination buffer is
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* used directly) upon stop() call.
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*/
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#define GEN_BB_RW (GEN_BB_READ | GEN_BB_WRITE)
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struct bounce_buffer {
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/* Copy of data parameter passed to start() */
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void *user_buffer;
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/*
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* DMA-aligned buffer. This field is always set to the value that
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* should be used for DMA; either equal to .user_buffer, or to a
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* freshly allocated aligned buffer.
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*/
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void *bounce_buffer;
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/* Copy of len parameter passed to start() */
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size_t len;
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/* DMA-aligned buffer length */
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size_t len_aligned;
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/* Copy of flags parameter passed to start() */
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unsigned int flags;
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};
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/**
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* bounce_buffer_start() -- Start the bounce buffer session
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* state: stores state passed between bounce_buffer_{start,stop}
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* data: pointer to buffer to be aligned
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* len: length of the buffer
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* flags: flags describing the transaction, see above.
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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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* bounce_buffer_stop() -- Finish the bounce buffer session
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* state: stores state passed between bounce_buffer_{start,stop}
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*/
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int bounce_buffer_stop(struct bounce_buffer *state);
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// TODO(hungte) Eliminate the alignment stuff below and replace them with a
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// better and centralized way to handler non-cache/aligned memory.
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// Helper macros for alignment.
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#define DMA_MINALIGN (64)
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#define ROUND(a, b) (((a) + (b) - 1) & ~((b) - 1))
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#define ALLOC_CACHE_ALIGN_BUFFER(type, name, size) \
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char __##name[ROUND(size * sizeof(type), DMA_MINALIGN) + \
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DMA_MINALIGN - 1]; \
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type *name = (type *) ALIGN((uintptr_t)__##name, DMA_MINALIGN)
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#ifndef ARCH_DMA_MINALIGN
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#define ARCH_DMA_MINALIGN (DMA_MINALIGN)
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#endif
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#endif // __COMMONLIB_STORAGE_BOUNCEBUF_H__
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