390 lines
13 KiB
C
390 lines
13 KiB
C
/****************************************************************************
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* include/nuttx/mtd/nand_model.h
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*
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* ONFI Support. The Open NAND Flash Interface (ONFI) is an industry
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* Workgroup made up of more than 100 companies that build, design-in, or
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* enable NAND Flash memory. This file provides definitions for standardized
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* ONFI NAND interfaces.
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*
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* Copyright (C) 2013 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* This logic was based largely on Atmel sample code for the SAMA5D3x with
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* modifications for better integration with NuttX. The Atmel sample code
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* has a BSD compatibile license that requires this copyright notice:
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*
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* Copyright (c) 2012, Atmel Corporation
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the names NuttX nor Atmel nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __INCLUDE_NUTTX_MTD_NAND_MODEL_H
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#define __INCLUDE_NUTTX_MTD_NAND_MODEL_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <stdint.h>
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#include <stdbool.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Number of NAND FLASH models inside the model list */
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#define NAND_NMODELS 60
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/* Bit definitions for the NAND model options field */
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#define NANDMODEL_DATAWIDTH8 (0 << 0) /* NAND uses an 8-bit databus */
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#define NANDMODEL_DATAWIDTH16 (1 << 0) /* NAND uses a 16-bit databus */
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#define NANDMODEL_COPYBACK (1 << 1) /* NAND supports the copy-back function
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* (internal page-to-page copy) */
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/****************************************************************************
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* Public Types
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****************************************************************************/
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/* Describes a particular model of NAND FLASH device. */
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struct nand_model_s
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{
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uint8_t devid; /* Identifier for the device */
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uint8_t options; /* Special options for the NandFlash */
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uint16_t pagesize; /* Size of the data area of a page in bytes */
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uint16_t sparesize; /* Size of the spare area of a page in bytes */
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uint16_t devsize; /* Size of the device in MB */
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uint16_t blocksize; /* Size of one block in kilobytes */
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/* Spare area placement scheme */
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FAR const struct nand_scheme_s *scheme;
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};
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/****************************************************************************
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* Public Data
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****************************************************************************/
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#ifndef __ASSEMBLY__
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#ifdef __cplusplus
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/* List of NandFlash models which can be recognized by the software */
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EXTERN const struct nand_model_s g_nandmodels[NAND_NMODELS];
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Name: nandmodel_find
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*
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* Description:
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* Looks for a nand_model_s corresponding to the given ID inside a list of
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* model. If found, the model variable is filled with the correct values.
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*
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* Input Parameters:
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* modeltab List of nand_model_s instances.
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* size Number of models in list.
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* chipid Identifier returned by the Nand(id1|(id2<<8)|(id3<<16)|(id4<<24)).
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* model nand_model_s instance to update with the model parameters.
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*
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* Returned Values:
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* OK is returned on success; -ENODEV is returned on failure.
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*
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****************************************************************************/
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int nandmodel_find(FAR const struct nand_model_s *modeltab, size_t size,
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uint32_t chipid, FAR struct nand_model_s *model);
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/****************************************************************************
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* Name: nandmodel_translate
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*
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* Description:
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* Translates address/size access of a nand_model_s to block, page and
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* offset values. The values are stored in the provided variables if their
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* pointer is not 0.
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*
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* Input Parameters:
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* model Pointer to a nand_model_s instance.
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* address Access address.
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* size Access size in bytes.
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* block Stores the first accessed block number.
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* page Stores the first accessed page number inside the first block.
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* offset Stores the byte offset inside the first accessed page.
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*
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* Returned Values:
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* OK on success; -EPIPE on failure.
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*
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****************************************************************************/
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int nandmodel_translate(FAR const struct nand_model_s *model, off_t address,
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size_t size, FAR off_t *block, off_t *page,
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off_t *offset);
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/****************************************************************************
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* Name: nandmodel_getscheme
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*
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* Description:
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* Returns the spare area placement scheme used by a particular nandflash
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* model.
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*
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* Input Parameters:
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* model Pointer to a nand_model_s instance.
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*
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* Returned Values:
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* Spare placement scheme
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*
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****************************************************************************/
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#define nandmodel_getscheme(m) ((m)->scheme)
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/****************************************************************************
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* Name: nandmodel_getdevid
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*
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* Description:
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* Returns the device ID of a particular NAND FLASH model.
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*
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* Input Parameters:
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* model Pointer to a nand_model_s instance.
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*
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* Returned Values:
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* Device ID
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*
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****************************************************************************/
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#define nandmodel_getdevid(m) ((m)->devid)
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/****************************************************************************
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* Name: nandmodel_getdevblocks
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*
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* Description:
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* Returns the number of blocks in the entire device.
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*
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* Input Parameters:
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* model Pointer to a nand_model_s instance.
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*
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* Returned Values:
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* Number of blocks in the device
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*
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****************************************************************************/
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#define nandmodel_getdevblocks(m) \
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((off_t)((m)->devsize << 10) / (m)->blocksize)
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/****************************************************************************
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* Name: nandmodel_getdevbytesize
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*
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* Description:
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* Returns the size of the whole device in bytes (this does not include
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* the size of the spare zones).
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*
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* Input Parameters:
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* model Pointer to a nand_model_s instance.
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*
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* Returned Values:
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* Size of the device in bytes
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*
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****************************************************************************/
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#define nandmodel_getdevbytesize(m) (((uint64_t)((m)->devsize) << 20))
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/****************************************************************************
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* Name: nandmodel_getdevmbsize
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*
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* Description:
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* Returns the size of the whole device in Mega bytes (this does not
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* include the size of the spare zones).
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*
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* Input Parameters:
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* model Pointer to a nand_model_s instance.
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*
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* Returned Values:
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* size of the device in MB.
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*
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****************************************************************************/
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#define nandmodel_getdevmbsize(m) ((uint32_t)((m)->devsize))
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/****************************************************************************
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* Name: nandmodel_pagesperblock
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*
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* Description:
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* Returns the number of pages in one single block of a device.
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*
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* Input Parameters:
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* model Pointer to a nand_model_s instance.
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*
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* Returned Values:
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* Block size in pages
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*
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****************************************************************************/
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#define nandmodel_pagesperblock(m) \
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((uint32_t)((m)->blocksize << 10) / (m)->pagesize)
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/****************************************************************************
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* Name: nandmodel_getdevpagesize
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*
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* Description:
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* Returns the number of pages in the entire device.
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*
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* Input Parameters:
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* model Pointer to a nand_model_s instance.
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*
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* Returned Values:
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* Number of pages in the device
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*
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****************************************************************************/
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#define nandmodel_getdevpagesize(m) \
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((uint32_t)nandmodel_getdevblocks(m) * nandmodel_pagesperblock(m))
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/****************************************************************************
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* Name: nandmodel_getbyteblocksize
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*
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* Description:
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* Returns the size in bytes of one single block of a device. This does not
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* take into account the spare zones size.
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*
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* Input Parameters:
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* model Pointer to a nand_model_s instance.
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*
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* Returned Values:
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* Block size in bytes
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*
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****************************************************************************/
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#define nandmodel_getbyteblocksize(m) ((unsigned int)(m)->blocksize << 10)
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/****************************************************************************
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* Name: nandmodel_getpagesize
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*
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* Description:
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* Returns the size of the data area of a page in bytes.
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*
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* Input Parameters:
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* model Pointer to a nand_model_s instance.
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*
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* Returned Values:
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* Size of data area in bytes
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*
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****************************************************************************/
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#define nandmodel_getpagesize(m) ((m)->pagesize)
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/****************************************************************************
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* Name: nandmodel_getsparesize
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*
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* Description:
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* Returns the size of the spare area of a page in bytes.
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*
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* Input Parameters:
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* model Pointer to a nand_model_s instance.
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*
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* Returned Values:
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* size of spare area in bytes
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*
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****************************************************************************/
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unsigned int nandmodel_getsparesize(FAR const struct nand_model_s *model);
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/****************************************************************************
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* Name: nandmodel_getbuswidth
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*
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* Description:
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* Returns the number of bits used by the data bus of a NAND FLASH device.
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*
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* Input Parameters:
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* model Pointer to a nand_model_s instance.
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*
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* Returned Values:
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* data width
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*
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****************************************************************************/
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#define nandmodel_getbuswidth(m) \
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(((m)->options & NANDMODEL_DATAWIDTH16) ? 16 : 8)
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/****************************************************************************
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* Name: nandmodel_havesmallblocks
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*
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* Description:
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* Returns true if the given NAND FLASH model uses the "small blocks/pages"
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* command set; otherwise returns false.
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*
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* Input Parameters:
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* model Pointer to a nand_model_s instance.
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*
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* Returned Values:
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* Returns true if the given NAND FLASH model uses the "small blocks/pages"
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* command set; otherwise returns false.
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*
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****************************************************************************/
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#define nandmodel_havesmallblocks(m) ((m)->pagesize <= 512)
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/****************************************************************************
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* Name: nandmodel_havecopyback
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*
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* Description:
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* Returns true if the device supports the copy-back operation. Otherwise
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* returns false.
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*
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* Input Parameters:
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* model Pointer to a nand_model_s instance.
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*
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* Returned Values:
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* Returns true if the device supports the copy-back operation. Otherwise
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* returns false.
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*
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****************************************************************************/
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#define nandmodel_havecopyback(m) (((m)->options & NANDMODEL_COPYBACK) != 0)
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#undef EXTERN
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#ifdef __cplusplus
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}
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#endif
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#endif /* __ASSEMBLY__ */
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#endif /* __INCLUDE_NUTTX_MTD_NAND_MODEL_H */
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