Apple16X50Serial.h   [plain text]


/*
Copyright (c) 1997-2002 Apple Computer, Inc. All rights reserved.
Copyright (c) 1994-1996 NeXT Software, Inc.  All rights reserved.
 
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*/

/*
 * Apple16X50Serial.h
 * Common types, macros, and helpers used by all compilation units in the Apple16X50Serial project.
 *
 * 2002-02-15	dreece	created.
 */

#ifndef _APPLEPCI16X50SERIAL_H
#define _APPLEPCI16X50SERIAL_H

// Use the "Build Styles" picker under the "Targets" tab to select DEBUG or ASSERT builds,
// or uncomment one or both of the following lines:
//#define DEBUG
//#define ASSERT

extern "C" void conslog_putc(char);
#define IO_putc(c) conslog_putc(c)

#ifdef DEBUG
 #define DEBUG_IOLog(args...)	IOLog (args)
 #define DEBUG_putc(c)		conslog_putc(c)
 #ifdef ASSERT
  #warning DEBUG and ASSERT are defined - resulting kexts are not suitable for deployment
 #else
  #warning DEBUG is defined - resulting kexts are not suitable for deployment
 #endif
#else
 #define DEBUG_IOLog(args...)
 #define DEBUG_putc(c)
 #ifdef ASSERT
  #warning ASSERT is defined - resulting kexts are not suitable for deployment
 #endif
#endif
#ifdef ASSERT
#define assert(ex)				\
{						\
    if (!(ex)) {				\
        IOLog( __FILE__ ":%d :", __LINE__ );	\
        Debugger("assert(" #ex ") failed");	\
    }						\
}
#define	_KERN_ASSERT_H_
#endif

#include <IOKit/IOLib.h>

// selects between bits of a and b.  if a bit in m is set, then take the corresponding
// bit of b; otherwise, take the corresponding bit of a.
UInt32 static inline maskMux(UInt32 a, UInt32 b, UInt32 m) { return (a&(~m)) | (b&m); }

// if b is true, then return a with all m's bits set; otherwise return a with all m's
// bits cleared.
UInt32 static inline boolBit(UInt32 a, bool b, UInt32 m) { return b ? (a|m) : (a&(~m)); }

// force an ordinal to conform to exact boolean values
#define BOOLVAL(x)	((bool) (x) ? (true) : (false))
#define BOOLSTR(x)	((x) ? "true" : "false")

// return new value of (val) constrained such that min ≤ val ≤ max
#define CONSTRAIN(min,val,max)	( ((val)<(min)) ? (min) : (((val)>(max)) ? (max) : (val)) )

// release an object iff it is not null, set the refernce to null after release
#define RELEASE(obj) do { if(obj) { (obj)->release(); (obj)=NULL; } } while (0)

// log a capabilities byte - each bit that is set in 'byte' will cause the
// corresponding string to be IOLog'd.  'lab' specifies a label to log first.
#define IOLogByte(byte, lab, s7, s6, s5, s4, s3, s2, s1, s0)		\
if (byte) {								\
    int i, any=0; char *str[8]={ s0, s1, s2, s3, s4, s5, s6, s7 };	\
        IOLog("%s=<", (lab));						\
            for (i=0;i<8;i++)							\
                if (byte&(1<<i)) {						\
                    if (any++) IO_putc(',');					\
                        if (str[i]) IOLog(str[i]); else IOLog("%d?",i);		\
                }								\
                IO_putc('>');							\
}

// OSString property commonly used in kexts, but no define is otherwise available
#define kCFBundleIdentifierKey	"CFBundleIdentifier"

// OSString property used by the Network Preference panel to display the name of a port
#define kNPProductNameKey	"Product Name"

// OSString property used by the Network Preference panel to display the name of a port
#define kLocationKey	"Location"

// OSNumber Property that describes the master clock frequency of each UART
#define kMasterClock	"Master Clock"

#endif //_APPLEPCI16X50SERIAL_H