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#ifndef CYGONCE_HAL_HAL_IO_H #define CYGONCE_HAL_HAL_IO_H //============================================================================= // // hal_io.h // // HAL device IO register support. // //============================================================================= //####ECOSGPLCOPYRIGHTBEGIN#### // ------------------------------------------- // This file is part of eCos, the Embedded Configurable Operating System. // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc. // // eCos is free software; you can redistribute it and/or modify it under // the terms of the GNU General Public License as published by the Free // Software Foundation; either version 2 or (at your option) any later version. // // eCos is distributed in the hope that it will be useful, but WITHOUT ANY // WARRANTY; without even the implied warranty of MERCHANTABILITY or // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License // for more details. // // You should have received a copy of the GNU General Public License along // with eCos; if not, write to the Free Software Foundation, Inc., // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. // // As a special exception, if other files instantiate templates or use macros // or inline functions from this file, or you compile this file and link it // with other works to produce a work based on this file, this file does not // by itself cause the resulting work to be covered by the GNU General Public // License. However the source code for this file must still be made available // in accordance with section (3) of the GNU General Public License. // // This exception does not invalidate any other reasons why a work based on // this file might be covered by the GNU General Public License. // // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc. // at http://sources.redhat.com/ecos/ecos-license/ // ------------------------------------------- //####ECOSGPLCOPYRIGHTEND#### //============================================================================= //#####DESCRIPTIONBEGIN#### // // Author(s): nickg // Contributors: Fabrice Gautier // Date: 1998-02-17 // Purpose: Define IO register support // Description: The macros defined here provide the HAL APIs for handling // device IO control registers. // // Usage: // #include <cyg/hal/hal_io.h> // ... // //####DESCRIPTIONEND#### // //============================================================================= #include <cyg/infra/cyg_type.h> #include <cyg/hal/plf_io.h> //----------------------------------------------------------------------------- // IO Register address. // This type is for recording the address of an IO register. typedef volatile CYG_ADDRWORD HAL_IO_REGISTER; //----------------------------------------------------------------------------- // BYTE Register access. // Individual and vectorized access to 8 bit registers. #define HAL_READ_UINT8( _register_, _value_ ) \ CYG_MACRO_START \ { \ asm volatile ( "xor %%eax,%%eax ;" \ "inb %%dx, %%al" \ : "=a" (_value_) \ : "d"(_register_) \ ); \ } \ CYG_MACRO_END #define HAL_WRITE_UINT8( _register_, _value_ ) \ CYG_MACRO_START \ { \ asm volatile ( "outb %%al,%%dx" \ : \ : "a" (_value_), "d"(_register_) \ ); \ } \ CYG_MACRO_END #define HAL_READ_UINT8_VECTOR( _register_, _buf_, _count_, _step_ ) \ CYG_MACRO_START \ ! Not supported MACRO ! \ CYG_MACRO_END #define HAL_WRITE_UINT8_VECTOR( _register_, _buf_, _count_, _step_ ) \ CYG_MACRO_START \ ! Not supported MACRO ! \ CYG_MACRO_END #define HAL_READ_UINT8_STRING( _register_, _buf_, _count_) \ CYG_MACRO_START \ asm volatile ( "insb" \ : \ : "c" (_count_), "d"(_register_), "D"(_buf_) \ ); \ CYG_MACRO_END #define HAL_WRITE_UINT8_STRING( _register_, _buf_, _count_) \ CYG_MACRO_START \ asm volatile ( "outsb" \ : \ : "c" (_count_), "d"(_register_), "S"(_buf_) \ ); \ CYG_MACRO_END //----------------------------------------------------------------------------- // 16 bit access. // Individual and vectorized access to 16 bit registers. #define HAL_READ_UINT16( _register_, _value_ ) \ CYG_MACRO_START \ { \ asm volatile ( "xor %%eax,%%eax ;" \ "inw %%dx, %%ax" \ : "=a" (_value_) \ : "d"(_register_) \ ); \ } \ CYG_MACRO_END #define HAL_WRITE_UINT16( _register_, _value_ ) \ CYG_MACRO_START \ { \ asm volatile ( "outw %%ax,%%dx" \ : \ : "a" (_value_), "d"(_register_) \ ); \ } \ CYG_MACRO_END #define HAL_READ_UINT16_VECTOR( _register_, _buf_, _count_, _step_ ) \ CYG_MACRO_START \ ! Not supported MACRO ! \ CYG_MACRO_END #define HAL_WRITE_UINT16_VECTOR( _register_, _buf_, _count_, _step_ ) \ CYG_MACRO_START \ ! Not supported MACRO ! \ CYG_MACRO_END #define HAL_READ_UINT16_STRING( _register_, _buf_, _count_) \ CYG_MACRO_START \ asm volatile ( "insw" \ : \ : "c" (_count_), "d"(_register_), "D"(_buf_) \ ); \ CYG_MACRO_END #define HAL_WRITE_UINT16_STRING( _register_, _buf_, _count_) \ CYG_MACRO_START \ asm volatile ( "outsw" \ : \ : "c" (_count_), "d"(_register_), "S"(_buf_) \ ); \ CYG_MACRO_END //----------------------------------------------------------------------------- // 32 bit access. // Individual and vectorized access to 32 bit registers. #define HAL_READ_UINT32( _register_, _value_ ) \ CYG_MACRO_START \ { \ asm volatile ( "inl %%dx, %%eax" \ : "=a" (_value_) \ : "d"(_register_) \ ); \ } \ CYG_MACRO_END #define HAL_WRITE_UINT32( _register_, _value_ ) \ CYG_MACRO_START \ { \ asm volatile ( "outl %%eax,%%dx" \ : \ : "a" (_value_), "d"(_register_) \ ); \ } \ CYG_MACRO_END #define HAL_READ_UINT32_VECTOR( _register_, _buf_, _count_, _step_ ) \ CYG_MACRO_START \ ! Not supported MACRO ! \ CYG_MACRO_END #define HAL_WRITE_UINT32_VECTOR( _register_, _buf_, _count_, _step_ ) \ CYG_MACRO_START \ ! Not supported MACRO ! \ CYG_MACRO_END #define HAL_READ_UINT32_STRING( _register_, _buf_, _count_) \ CYG_MACRO_START \ asm volatile ( "insl" \ : \ : "c" (_count_), "d"(_register_), "D"(_buf_) \ ); \ CYG_MACRO_END #define HAL_WRITE_UINT32_STRING( _register_, _buf_, _count_) \ CYG_MACRO_START \ asm volatile ( "outsl" \ : \ : "c" (_count_), "d"(_register_), "S"(_buf_) \ ); \ CYG_MACRO_END //----------------------------------------------------------------------------- // Macros for acessing shared memory structures #define HAL_READMEM_UINT8( _reg_, _val_ ) ((_val_) = *((volatile CYG_BYTE *)(_reg_))) #define HAL_WRITEMEM_UINT8( _reg_, _val_ ) (*((volatile CYG_BYTE *)(_reg_)) = (_val_)) #define HAL_READMEM_UINT16( _reg_, _val_ ) ((_val_) = *((volatile CYG_WORD16 *)(_reg_))) #define HAL_WRITEMEM_UINT16( _reg_, _val_ ) (*((volatile CYG_WORD16 *)(_reg_)) = (_val_)) #define HAL_READMEM_UINT32( _reg_, _val_ ) ((_val_) = *((volatile CYG_WORD32 *)(_reg_))) #define HAL_WRITEMEM_UINT32( _reg_, _val_ ) (*((volatile CYG_WORD32 *)(_reg_)) = (_val_)) //----------------------------------------------------------------------------- #endif // ifndef CYGONCE_HAL_HAL_IO_H // End of hal_io.h