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Test Your Knowledge in Computers #36
Difficulty: Easy
Moving processes from the main memory of a memory-constrained Linux computer to disk is called 'swapping'.
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struct_platform_nand_ctrl(9) [centos man page]

STRUCT 
PLATFORM_NAND(9) Structures STRUCT PLATFORM_NAND(9) NAME
struct_platform_nand_ctrl - controller level device structure SYNOPSIS
struct platform_nand_ctrl { int (* probe) (struct platform_device *pdev); void (* remove) (struct platform_device *pdev); void (* hwcontrol) (struct mtd_info *mtd, int cmd); int (* dev_ready) (struct mtd_info *mtd); void (* select_chip) (struct mtd_info *mtd, int chip); void (* cmd_ctrl) (struct mtd_info *mtd, int dat, unsigned int ctrl); void (* write_buf) (struct mtd_info *mtd, const uint8_t *buf, int len); void (* read_buf) (struct mtd_info *mtd, uint8_t *buf, int len); unsigned char (* read_byte) (struct mtd_info *mtd); void * priv; }; MEMBERS
probe platform specific function to probe/setup hardware remove platform specific function to remove/teardown hardware hwcontrol platform specific hardware control structure dev_ready platform specific function to read ready/busy pin select_chip platform specific chip select function cmd_ctrl platform specific function for controlling ALE/CLE/nCE. Also used to write command and address write_buf platform specific function for write buffer read_buf platform specific function for read buffer read_byte platform specific function to read one byte from chip priv private data to transport driver specific settings DESCRIPTION
All fields are optional and depend on the hardware driver requirements AUTHOR
Thomas Gleixner <tglx@linutronix.de> Author. COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 STRUCT PLATFORM_NAND(9)

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STRUCT 
NAND_ECC_CTRL(9) Structures STRUCT NAND_ECC_CTRL(9) NAME
struct_nand_ecc_ctrl - Control structure for ecc SYNOPSIS
struct nand_ecc_ctrl { nand_ecc_modes_t mode; int steps; int size; int bytes; int total; int prepad; int postpad; struct nand_ecclayout * layout; void (* hwctl) (struct mtd_info *mtd, int mode); int (* calculate) (struct mtd_info *mtd,const uint8_t *dat,uint8_t *ecc_code); int (* correct) (struct mtd_info *mtd, uint8_t *dat,uint8_t *read_ecc,uint8_t *calc_ecc); int (* read_page_raw) (struct mtd_info *mtd,struct nand_chip *chip,uint8_t *buf, int page); void (* write_page_raw) (struct mtd_info *mtd,struct nand_chip *chip,const uint8_t *buf); int (* read_page) (struct mtd_info *mtd,struct nand_chip *chip,uint8_t *buf, int page); int (* read_subpage) (struct mtd_info *mtd,struct nand_chip *chip,uint32_t offs, uint32_t len,uint8_t *buf); void (* write_page) (struct mtd_info *mtd,struct nand_chip *chip,const uint8_t *buf); int (* read_oob) (struct mtd_info *mtd,struct nand_chip *chip,int page,int sndcmd); int (* write_oob) (struct mtd_info *mtd,struct nand_chip *chip,int page); }; MEMBERS
mode ecc mode steps number of ecc steps per page size data bytes per ecc step bytes ecc bytes per step total total number of ecc bytes per page prepad padding information for syndrome based ecc generators postpad padding information for syndrome based ecc generators layout ECC layout control struct pointer hwctl function to control hardware ecc generator. Must only be provided if an hardware ECC is available calculate function for ecc calculation or readback from ecc hardware correct function for ecc correction, matching to ecc generator (sw/hw) read_page_raw function to read a raw page without ECC write_page_raw function to write a raw page without ECC read_page function to read a page according to the ecc generator requirements read_subpage function to read parts of the page covered by ECC. write_page function to write a page according to the ecc generator requirements read_oob function to read chip OOB data write_oob function to write chip OOB data AUTHOR
Thomas Gleixner <tglx@linutronix.de> Author. COPYRIGHT
Kernel Hackers Manual 2.6. July 2010 STRUCT NAND_ECC_CTRL(9)

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