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638d983840
This updates the Primary Vendor-Specific Extended Query parsing to version 1.4 in order to get the information about the Configurable Programming Mode regions implemented in the Sibley flash, as well as selecting the appropriate write command code. This flash does not behave like traditional NOR flash when writing data. While mtdblock should just work, further changes are needed for JFFS2 use. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
122 lines
3.9 KiB
C
122 lines
3.9 KiB
C
/*
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* $Id: mtd-abi.h,v 1.12 2005/08/06 04:40:43 nico Exp $
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*
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* Portions of MTD ABI definition which are shared by kernel and user space
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*/
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#ifndef __MTD_ABI_H__
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#define __MTD_ABI_H__
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#ifndef __KERNEL__ /* Urgh. The whole point of splitting this out into
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separate files was to avoid #ifdef __KERNEL__ */
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#define __user
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#endif
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struct erase_info_user {
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uint32_t start;
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uint32_t length;
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};
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struct mtd_oob_buf {
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uint32_t start;
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uint32_t length;
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unsigned char __user *ptr;
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};
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#define MTD_ABSENT 0
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#define MTD_RAM 1
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#define MTD_ROM 2
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#define MTD_NORFLASH 3
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#define MTD_NANDFLASH 4
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#define MTD_PEROM 5
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#define MTD_DATAFLASH 6
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#define MTD_OTHER 14
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#define MTD_UNKNOWN 15
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#define MTD_CLEAR_BITS 1 // Bits can be cleared (flash)
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#define MTD_SET_BITS 2 // Bits can be set
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#define MTD_ERASEABLE 4 // Has an erase function
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#define MTD_WRITEB_WRITEABLE 8 // Direct IO is possible
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#define MTD_VOLATILE 16 // Set for RAMs
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#define MTD_XIP 32 // eXecute-In-Place possible
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#define MTD_OOB 64 // Out-of-band data (NAND flash)
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#define MTD_ECC 128 // Device capable of automatic ECC
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#define MTD_NO_VIRTBLOCKS 256 // Virtual blocks not allowed
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#define MTD_PROGRAM_REGIONS 512 // Configurable Programming Regions
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// Some common devices / combinations of capabilities
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#define MTD_CAP_ROM 0
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#define MTD_CAP_RAM (MTD_CLEAR_BITS|MTD_SET_BITS|MTD_WRITEB_WRITEABLE)
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#define MTD_CAP_NORFLASH (MTD_CLEAR_BITS|MTD_ERASEABLE)
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#define MTD_CAP_NANDFLASH (MTD_CLEAR_BITS|MTD_ERASEABLE|MTD_OOB)
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#define MTD_WRITEABLE (MTD_CLEAR_BITS|MTD_SET_BITS)
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// Types of automatic ECC/Checksum available
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#define MTD_ECC_NONE 0 // No automatic ECC available
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#define MTD_ECC_RS_DiskOnChip 1 // Automatic ECC on DiskOnChip
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#define MTD_ECC_SW 2 // SW ECC for Toshiba & Samsung devices
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/* ECC byte placement */
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#define MTD_NANDECC_OFF 0 // Switch off ECC (Not recommended)
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#define MTD_NANDECC_PLACE 1 // Use the given placement in the structure (YAFFS1 legacy mode)
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#define MTD_NANDECC_AUTOPLACE 2 // Use the default placement scheme
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#define MTD_NANDECC_PLACEONLY 3 // Use the given placement in the structure (Do not store ecc result on read)
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#define MTD_NANDECC_AUTOPL_USR 4 // Use the given autoplacement scheme rather than using the default
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/* OTP mode selection */
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#define MTD_OTP_OFF 0
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#define MTD_OTP_FACTORY 1
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#define MTD_OTP_USER 2
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struct mtd_info_user {
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uint8_t type;
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uint32_t flags;
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uint32_t size; // Total size of the MTD
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uint32_t erasesize;
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uint32_t oobblock; // Size of OOB blocks (e.g. 512)
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uint32_t oobsize; // Amount of OOB data per block (e.g. 16)
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uint32_t ecctype;
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uint32_t eccsize;
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};
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struct region_info_user {
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uint32_t offset; /* At which this region starts,
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* from the beginning of the MTD */
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uint32_t erasesize; /* For this region */
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uint32_t numblocks; /* Number of blocks in this region */
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uint32_t regionindex;
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};
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struct otp_info {
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uint32_t start;
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uint32_t length;
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uint32_t locked;
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};
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#define MEMGETINFO _IOR('M', 1, struct mtd_info_user)
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#define MEMERASE _IOW('M', 2, struct erase_info_user)
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#define MEMWRITEOOB _IOWR('M', 3, struct mtd_oob_buf)
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#define MEMREADOOB _IOWR('M', 4, struct mtd_oob_buf)
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#define MEMLOCK _IOW('M', 5, struct erase_info_user)
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#define MEMUNLOCK _IOW('M', 6, struct erase_info_user)
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#define MEMGETREGIONCOUNT _IOR('M', 7, int)
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#define MEMGETREGIONINFO _IOWR('M', 8, struct region_info_user)
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#define MEMSETOOBSEL _IOW('M', 9, struct nand_oobinfo)
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#define MEMGETOOBSEL _IOR('M', 10, struct nand_oobinfo)
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#define MEMGETBADBLOCK _IOW('M', 11, loff_t)
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#define MEMSETBADBLOCK _IOW('M', 12, loff_t)
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#define OTPSELECT _IOR('M', 13, int)
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#define OTPGETREGIONCOUNT _IOW('M', 14, int)
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#define OTPGETREGIONINFO _IOW('M', 15, struct otp_info)
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#define OTPLOCK _IOR('M', 16, struct otp_info)
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struct nand_oobinfo {
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uint32_t useecc;
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uint32_t eccbytes;
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uint32_t oobfree[8][2];
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uint32_t eccpos[32];
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};
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#endif /* __MTD_ABI_H__ */
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