| /* 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) */ |
