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ppbus_var.h revision 1.1.1.1 
      1 #ifndef __PPBUS_VAR_H
      2 #define __PPBUS_VAR_H
      3 
      4 /* PPBUS mode masks. */
      5 #define PPBUS_COMPATIBLE	0x01	/* Centronics compatible mode */
      6 #define PPBUS_NIBBLE		0x02	/* reverse 4 bit mode */
      7 #define PPBUS_PS2		0x04	/* PS/2 byte mode */
      8 #define PPBUS_EPP		0x08	/* EPP mode, 32 bit */
      9 #define PPBUS_ECP		0x10	/* ECP mode */
     10 #define PPBUS_FAST		0x20	/* Fast Centronics mode */
     11 /* mode aliases */
     12 #define PPBUS_SPP		PPBUS_NIBBLE | PPBUS_PS2 /* Won't work! */
     13 #define PPBUS_BYTE		PPBUS_PS2
     14 #define PPBUS_MASK		0x3f
     15 #define PPBUS_OPTIONS_MASK	0xc0
     16 /* Useful macros for this field */
     17 #define PPBUS_IS_EPP(mode) ((mode) & PPBUS_EPP)
     18 #define PPBUS_IN_EPP_MODE(bus) (PPBUS_IS_EPP(ppbus_get_mode(bus)))
     19 #define PPBUS_IN_NIBBLE_MODE(bus) (ppbus_get_mode(bus) & PPBUS_NIBBLE)
     20 #define PPBUS_IN_PS2_MODE(bus) (ppbus_get_mode(bus) & PPBUS_PS2)
     21 
     22 /* PPBUS capabilities */
     23 #define PPBUS_HAS_INTR		0x01	/* Interrupt available */
     24 #define PPBUS_HAS_DMA		0x02	/* DMA available */
     25 #define PPBUS_HAS_FIFO		0x04	/* FIFO available */
     26 #define PPBUS_HAS_PS2		0x08	/* PS2 mode capable */
     27 #define PPBUS_HAS_ECP		0x10	/* ECP mode available */
     28 #define PPBUS_HAS_EPP		0x20	/* EPP mode available */
     29 
     30 /* IEEE flag in soft config */
     31 #define PPBUS_DISABLE_IEEE	0x00
     32 #define PPBUS_ENABLE_IEEE	0x01
     33 
     34 /* List of IVARS available to ppbus device drivers */
     35 /* #define PPBUS_IVAR_MODE 0 */
     36 #define PPBUS_IVAR_DMA		1
     37 #define PPBUS_IVAR_INTR		2
     38 #define PPBUS_IVAR_EPP_PROTO    3
     39 #define PPBUS_IVAR_IEEE		4
     40 /* Needed by callback's implemented using callout */
     41 #define PPBUS_IVAR_IRQSTAT	5
     42 #define PPBUS_IVAR_DMASTAT	6
     43 /* other fields are reserved to the ppbus internals */
     44 
     45 /* EPP protocol versions */
     46 #define PPBUS_EPP_1_9           0x0                     /* default */
     47 #define PPBUS_EPP_1_7           0x1
     48 
     49 /* Parallel Port Bus sleep/wakeup queue. */
     50 #define PPBUSPRI		(PZERO+8)
     51 
     52 #endif
     53