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Diffstat (limited to 'drivers/char/ip2/i2os.h')
| -rw-r--r-- | drivers/char/ip2/i2os.h | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/drivers/char/ip2/i2os.h b/drivers/char/ip2/i2os.h new file mode 100644 index 000000000000..eff9b542d699 --- /dev/null +++ b/drivers/char/ip2/i2os.h @@ -0,0 +1,127 @@ +/******************************************************************************* +* +* (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 */ + + |