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