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/
usr/
src/
linux-headers-3.0.0-14/
arch/
sparc/
include/
asm/
- drwxr-xr-x
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Viewing file:  ns87303.h (3.21 KB) -rw-r--r--Select action/file-type:  ( +) |  ( +) |  ( +) | Code ( +) | Session ( +) |  ( +) | SDB ( +) |  ( +) |  ( +) |  ( +) |  ( +) |  ( +) |
/* ns87303.h: Configuration Register Description for the
* National Semiconductor PC87303 (SuperIO).
*
* Copyright (C) 1997 Eddie C. Dost (ecd@skynet.be)
*/
#ifndef _SPARC_NS87303_H
#define _SPARC_NS87303_H 1
/*
* Control Register Index Values
*/
#define FER 0x00
#define FAR 0x01
#define PTR 0x02
#define FCR 0x03
#define PCR 0x04
#define KRR 0x05
#define PMC 0x06
#define TUP 0x07
#define SID 0x08
#define ASC 0x09
#define CS0CF0 0x0a
#define CS0CF1 0x0b
#define CS1CF0 0x0c
#define CS1CF1 0x0d
/* Function Enable Register (FER) bits */
#define FER_EDM 0x10 /* Encoded Drive and Motor pin information */
/* Function Address Register (FAR) bits */
#define FAR_LPT_MASK 0x03
#define FAR_LPTB 0x00
#define FAR_LPTA 0x01
#define FAR_LPTC 0x02
/* Power and Test Register (PTR) bits */
#define PTR_LPTB_IRQ7 0x08
#define PTR_LEVEL_IRQ 0x80 /* When not ECP/EPP: Use level IRQ */
#define PTR_LPT_REG_DIR 0x80 /* When ECP/EPP: LPT CTR controls direction */
/* of the parallel port */
/* Function Control Register (FCR) bits */
#define FCR_LDE 0x10 /* Logical Drive Exchange */
#define FCR_ZWS_ENA 0x20 /* Enable short host read/write in ECP/EPP */
/* Printer Control Register (PCR) bits */
#define PCR_EPP_ENABLE 0x01
#define PCR_EPP_IEEE 0x02 /* Enable EPP Version 1.9 (IEEE 1284) */
#define PCR_ECP_ENABLE 0x04
#define PCR_ECP_CLK_ENA 0x08 /* If 0 ECP Clock is stopped on Power down */
#define PCR_IRQ_POLAR 0x20 /* If 0 IRQ is level high or negative pulse, */
/* if 1 polarity is inverted */
#define PCR_IRQ_ODRAIN 0x40 /* If 1, IRQ is open drain */
/* Tape UARTs and Parallel Port Config Register (TUP) bits */
#define TUP_EPP_TIMO 0x02 /* Enable EPP timeout IRQ */
/* Advanced SuperIO Config Register (ASC) bits */
#define ASC_LPT_IRQ7 0x01 /* Always use IRQ7 for LPT */
#define ASC_DRV2_SEL 0x02 /* Logical Drive Exchange controlled by TDR */
#define FER_RESERVED 0x00
#define FAR_RESERVED 0x00
#define PTR_RESERVED 0x73
#define FCR_RESERVED 0xc4
#define PCR_RESERVED 0x10
#define KRR_RESERVED 0x00
#define PMC_RESERVED 0x98
#define TUP_RESERVED 0xfb
#define SIP_RESERVED 0x00
#define ASC_RESERVED 0x18
#define CS0CF0_RESERVED 0x00
#define CS0CF1_RESERVED 0x08
#define CS1CF0_RESERVED 0x00
#define CS1CF1_RESERVED 0x08
#ifdef __KERNEL__
#include <linux/spinlock.h>
#include <asm/system.h>
#include <asm/io.h>
extern spinlock_t ns87303_lock;
static inline int ns87303_modify(unsigned long port, unsigned int index,
unsigned char clr, unsigned char set)
{
static unsigned char reserved[] = {
FER_RESERVED, FAR_RESERVED, PTR_RESERVED, FCR_RESERVED,
PCR_RESERVED, KRR_RESERVED, PMC_RESERVED, TUP_RESERVED,
SIP_RESERVED, ASC_RESERVED, CS0CF0_RESERVED, CS0CF1_RESERVED,
CS1CF0_RESERVED, CS1CF1_RESERVED
};
unsigned long flags;
unsigned char value;
if (index > 0x0d)
return -EINVAL;
spin_lock_irqsave(&ns87303_lock, flags);
outb(index, port);
value = inb(port + 1);
value &= ~(reserved[index] | clr);
value |= set;
outb(value, port + 1);
outb(value, port + 1);
spin_unlock_irqrestore(&ns87303_lock, flags);
return 0;
}
#endif /* __KERNEL__ */
#endif /* !(_SPARC_NS87303_H) */
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