ip22-nvram.c File Reference

#include <linux/module.h>
#include <asm/sgi/hpc3.h>
#include <asm/sgi/ip22.h>

Go to the source code of this file.

Macros
#define	EEPROM_READ   0xc000 /* serial memory read */
#define	EEPROM_WEN   0x9800 /* write enable before prog modes */
#define	EEPROM_WRITE   0xa000 /* serial memory write */
#define	EEPROM_WRALL   0x8800 /* write all registers */
#define	EEPROM_WDS   0x8000 /* disable all programming */
#define	EEPROM_PRREAD   0xc000 /* read protect register */
#define	EEPROM_PREN   0x9800 /* enable protect register mode */
#define	EEPROM_PRCLEAR   0xffff /* clear protect register */
#define	EEPROM_PRWRITE   0xa000 /* write protect register */
#define	EEPROM_PRDS   0x8000 /* disable protect register, forever */
#define	EEPROM_EPROT   0x01 /* Protect register enable */
#define	EEPROM_CSEL   0x02 /* Chip select */
#define	EEPROM_ECLK   0x04 /* EEPROM clock */
#define	EEPROM_DATO   0x08 /* Data out */
#define	EEPROM_DATI   0x10 /* Data in */
#define	delay()
#define	eeprom_cs_on(ptr)
#define	eeprom_cs_off(ptr)
#define	BITS_IN_COMMAND   11

Functions
unsigned short	ip22_eeprom_read (unsigned int *ctrl, int reg)
	EXPORT_SYMBOL (ip22_eeprom_read)
unsigned short	ip22_nvram_read (int reg)
	EXPORT_SYMBOL (ip22_nvram_read)

Macro Definition Documentation

#define BITS_IN_COMMAND   11

Definition at line 49 of file ip22-nvram.c.

#define delay

(

void

)

Value:

({                      \
    int x;                          \
    for (x=0; x<100000; x++) __asm__ __volatile__(""); })

Definition at line 30 of file ip22-nvram.c.

#define eeprom_cs_off

(

ptr

)

Value:

({  \
    __raw_writel(__raw_readl(ptr) & ~EEPROM_ECLK, ptr); \
    __raw_writel(__raw_readl(ptr) & ~EEPROM_CSEL, ptr); \
    __raw_writel(__raw_readl(ptr) | EEPROM_EPROT, ptr); \
    __raw_writel(__raw_readl(ptr) | EEPROM_ECLK, ptr); })

Definition at line 43 of file ip22-nvram.c.

#define eeprom_cs_on

(

ptr

)

Value:

({  \
    __raw_writel(__raw_readl(ptr) & ~EEPROM_DATO, ptr); \
    __raw_writel(__raw_readl(ptr) & ~EEPROM_ECLK, ptr); \
    __raw_writel(__raw_readl(ptr) & ~EEPROM_EPROT, ptr);    \
    delay();                                        \
    __raw_writel(__raw_readl(ptr) | EEPROM_CSEL, ptr);  \
    __raw_writel(__raw_readl(ptr) | EEPROM_ECLK, ptr); })

Definition at line 34 of file ip22-nvram.c.

#define EEPROM_CSEL   0x02 /* Chip select */

Definition at line 24 of file ip22-nvram.c.

#define EEPROM_DATI   0x10 /* Data in */

Definition at line 27 of file ip22-nvram.c.

#define EEPROM_DATO   0x08 /* Data out */

Definition at line 26 of file ip22-nvram.c.

#define EEPROM_ECLK   0x04 /* EEPROM clock */

Definition at line 25 of file ip22-nvram.c.

#define EEPROM_EPROT   0x01 /* Protect register enable */

Definition at line 23 of file ip22-nvram.c.

#define EEPROM_PRCLEAR   0xffff /* clear protect register */

Definition at line 19 of file ip22-nvram.c.

#define EEPROM_PRDS   0x8000 /* disable protect register, forever */

Definition at line 21 of file ip22-nvram.c.

#define EEPROM_PREN   0x9800 /* enable protect register mode */

Definition at line 18 of file ip22-nvram.c.

#define EEPROM_PRREAD   0xc000 /* read protect register */

Definition at line 17 of file ip22-nvram.c.

#define EEPROM_PRWRITE   0xa000 /* write protect register */

Definition at line 20 of file ip22-nvram.c.

#define EEPROM_READ   0xc000 /* serial memory read */

Definition at line 12 of file ip22-nvram.c.

#define EEPROM_WDS   0x8000 /* disable all programming */

Definition at line 16 of file ip22-nvram.c.

#define EEPROM_WEN   0x9800 /* write enable before prog modes */

Definition at line 13 of file ip22-nvram.c.

#define EEPROM_WRALL   0x8800 /* write all registers */

Definition at line 15 of file ip22-nvram.c.

#define EEPROM_WRITE   0xa000 /* serial memory write */

Definition at line 14 of file ip22-nvram.c.

Function Documentation

EXPORT_SYMBOL

(

ip22_eeprom_read

)

EXPORT_SYMBOL

(

ip22_nvram_read

)

unsigned short ip22_eeprom_read	(	unsigned int *	ctrl,
		int	reg
	)

Definition at line 76 of file ip22-nvram.c.

unsigned short ip22_nvram_read

(

int

reg

)

Definition at line 106 of file ip22-nvram.c.