1 /* ns87303.h: Configuration Register Description for the
2 * National Semiconductor PC87303 (SuperIO).
4 * Copyright (C) 1997 Eddie C. Dost (ecd@skynet.be)
7 #ifndef _SPARC_NS87303_H
8 #define _SPARC_NS87303_H 1
11 * Control Register Index Values
28 /* Function Enable Register (FER) bits */
29 #define FER_EDM 0x10 /* Encoded Drive and Motor pin information */
31 /* Function Address Register (FAR) bits */
32 #define FAR_LPT_MASK 0x03
37 /* Power and Test Register (PTR) bits */
38 #define PTR_LPTB_IRQ7 0x08
39 #define PTR_LEVEL_IRQ 0x80 /* When not ECP/EPP: Use level IRQ */
40 #define PTR_LPT_REG_DIR 0x80 /* When ECP/EPP: LPT CTR controls direction */
41 /* of the parallel port */
43 /* Function Control Register (FCR) bits */
44 #define FCR_LDE 0x10 /* Logical Drive Exchange */
45 #define FCR_ZWS_ENA 0x20 /* Enable short host read/write in ECP/EPP */
47 /* Printer Control Register (PCR) bits */
48 #define PCR_EPP_ENABLE 0x01
49 #define PCR_EPP_IEEE 0x02 /* Enable EPP Version 1.9 (IEEE 1284) */
50 #define PCR_ECP_ENABLE 0x04
51 #define PCR_ECP_CLK_ENA 0x08 /* If 0 ECP Clock is stopped on Power down */
52 #define PCR_IRQ_POLAR 0x20 /* If 0 IRQ is level high or negative pulse, */
53 /* if 1 polarity is inverted */
54 #define PCR_IRQ_ODRAIN 0x40 /* If 1, IRQ is open drain */
56 /* Tape UARTs and Parallel Port Config Register (TUP) bits */
57 #define TUP_EPP_TIMO 0x02 /* Enable EPP timeout IRQ */
59 /* Advanced SuperIO Config Register (ASC) bits */
60 #define ASC_LPT_IRQ7 0x01 /* Always use IRQ7 for LPT */
61 #define ASC_DRV2_SEL 0x02 /* Logical Drive Exchange controlled by TDR */
63 #define FER_RESERVED 0x00
64 #define FAR_RESERVED 0x00
65 #define PTR_RESERVED 0x73
66 #define FCR_RESERVED 0xc4
67 #define PCR_RESERVED 0x10
68 #define KRR_RESERVED 0x00
69 #define PMC_RESERVED 0x98
70 #define TUP_RESERVED 0xfb
71 #define SIP_RESERVED 0x00
72 #define ASC_RESERVED 0x18
73 #define CS0CF0_RESERVED 0x00
74 #define CS0CF1_RESERVED 0x08
75 #define CS1CF0_RESERVED 0x00
76 #define CS1CF1_RESERVED 0x08
80 #include <linux/spinlock.h>
84 extern spinlock_t ns87303_lock
;
86 static inline int ns87303_modify(unsigned long port
, unsigned int index
,
87 unsigned char clr
, unsigned char set
)
89 static unsigned char reserved
[] = {
90 FER_RESERVED
, FAR_RESERVED
, PTR_RESERVED
, FCR_RESERVED
,
91 PCR_RESERVED
, KRR_RESERVED
, PMC_RESERVED
, TUP_RESERVED
,
92 SIP_RESERVED
, ASC_RESERVED
, CS0CF0_RESERVED
, CS0CF1_RESERVED
,
93 CS1CF0_RESERVED
, CS1CF1_RESERVED
101 spin_lock_irqsave(&ns87303_lock
, flags
);
104 value
= inb(port
+ 1);
105 value
&= ~(reserved
[index
] | clr
);
107 outb(value
, port
+ 1);
108 outb(value
, port
+ 1);
110 spin_unlock_irqrestore(&ns87303_lock
, flags
);
115 #endif /* __KERNEL__ */
117 #endif /* !(_SPARC_NS87303_H) */