/*******************************************************************************
*
* (c) 1999 by Computone Corporation
*
********************************************************************************
*
*
* PACKAGE: Linux tty Device Driver for IntelliPort II family of multiport
* serial I/O controllers.
*
* DESCRIPTION: Defines, definitions and includes which are heavily dependent
* on O/S, host, compiler, etc. This file is tailored for:
* Linux v2.0.0 and later
* Gnu gcc c2.7.2
* 80x86 architecture
*
*******************************************************************************/
#ifndef I2OS_H /* To prevent multiple includes */
#define I2OS_H 1
//-------------------------------------------------
// Required Includes
//-------------------------------------------------
#include "ip2types.h"
#include <asm/io.h> /* For inb, etc */
//------------------------------------
// Defines for I/O instructions:
//------------------------------------
#define INB(port) inb(port)
#define OUTB(port,value) outb((value),(port))
#define INW(port) inw(port)
#define OUTW(port,value) outw((value),(port))
#define OUTSW(port,addr,count) outsw((port),(addr),(((count)+1)/2))
#define OUTSB(port,addr,count) outsb((port),(addr),(((count)+1))&-2)
#define INSW(port,addr,count) insw((port),(addr),(((count)+1)/2))
#define INSB(port,addr,count) insb((port),(addr),(((count)+1))&-2)
//--------------------------------------------
// Interrupt control
//--------------------------------------------
#define LOCK_INIT(a) rwlock_init(a)
#define SAVE_AND_DISABLE_INTS(a,b) { \
/* printk("get_lock: 0x%x,%4d,%s\n",(int)a,__LINE__,__FILE__);*/ \
spin_lock_irqsave(a,b); \
}
#define RESTORE_INTS(a,b) { \
/* printk("rel_lock: 0x%x,%4d,%s\n",(int)a,__LINE__,__FILE__);*/ \
spin_unlock_irqrestore(a,b); \
}
#define READ_LOCK_IRQSAVE(a,b) { \
/* printk("get_read_lock: 0x%x,%4d,%s\n",(int)a,__LINE__,__FILE__);*/ \
read_lock_irqsave(a,b); \
}
#define READ_UNLOCK_IRQRESTORE(a,b) { \
/* printk("rel_read_lock: 0x%x,%4d,%s\n",(int)a,__LINE__,__FILE__);*/ \
read_unlock_irqrestore(a,b); \
}
#define WRITE_LOCK_IRQSAVE(a,b) { \
/* printk("get_write_lock: 0x%x,%4d,%s\n",(int)a,__LINE__,__FILE__);*/ \
write_lock_irqsave(a,b); \
}
#define WRITE_UNLOCK_IRQRESTORE(a,b) { \
/* printk("rel_write_lock: 0x%x,%4d,%s\n",(int)a,__LINE__,__FILE__);*/ \
write_unlock_irqrestore(a,b); \
}
//------------------------------------------------------------------------------
// Hardware-delay loop
//
// Probably used in only one place (see i2ellis.c) but this helps keep things
// together. Note we have unwound the IN instructions. On machines with a
// reasonable cache, the eight instructions (1 byte each) should fit in cache
// nicely, and on un-cached machines, the code-fetch would tend not to dominate.
// Note that cx is shifted so that "count" still reflects the total number of
// iterations assuming no unwinding.
//------------------------------------------------------------------------------
//#define DELAY1MS(port,count,label)
//------------------------------------------------------------------------------
// Macros to switch to a new stack, saving stack pointers, and to restore the
// old stack (Used, for example, in i2lib.c) "heap" is the address of some
// buffer which will become the new stack (working down from highest address).
// The two words at the two lowest addresses in this stack are for storing the
// SS and SP.
//------------------------------------------------------------------------------
//#define TO_NEW_STACK(heap,size)
//#define TO_OLD_STACK(heap)
//------------------------------------------------------------------------------
// Macros to save the original IRQ vectors and masks, and to patch in new ones.
//------------------------------------------------------------------------------
//#define SAVE_IRQ_MASKS(dest)
//#define WRITE_IRQ_MASKS(src)
//#define SAVE_IRQ_VECTOR(value,dest)
//#define WRITE_IRQ_VECTOR(value,src)
//------------------------------------------------------------------------------
// Macro to copy data from one far pointer to another.
//------------------------------------------------------------------------------
#define I2_MOVE_DATA(fpSource,fpDest,count) memmove(fpDest,fpSource,count);
//------------------------------------------------------------------------------
// Macros to issue eoi's to host interrupt control (IBM AT 8259-style).
//------------------------------------------------------------------------------
//#define MASTER_EOI
//#define SLAVE_EOI
#endif /* I2OS_H */
