| /* |
| * (C) Copyright IBM Corporation 2004 |
| * All Rights Reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * on the rights to use, copy, modify, merge, publish, distribute, sub |
| * license, and/or sell copies of the Software, and to permit persons to whom |
| * the Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the next |
| * paragraph) shall be included in all copies or substantial portions of the |
| * Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL |
| * IBM AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, |
| * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR |
| * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE |
| * USE OR OTHER DEALINGS IN THE SOFTWARE. |
| */ |
| |
| /** |
| * \file mmio.h |
| * Functions for properly handling memory mapped IO on various platforms. |
| * |
| * \author Ian Romanick <idr@us.ibm.com> |
| */ |
| |
| |
| #ifndef MMIO_H |
| #define MMIO_H |
| |
| #include "glheader.h" |
| |
| #if defined( __powerpc__ ) |
| |
| static INLINE u_int32_t |
| read_MMIO_LE32( volatile void * base, unsigned long offset ) |
| { |
| u_int32_t val; |
| |
| __asm__ __volatile__( "lwbrx %0, %1, %2 ; eieio" |
| : "=r" (val) |
| : "b" (base), "r" (offset) ); |
| return val; |
| } |
| |
| #else |
| |
| static INLINE u_int32_t |
| read_MMIO_LE32( volatile void * base, unsigned long offset ) |
| { |
| volatile u_int32_t * p = (volatile u_int32_t *) (((volatile char *) base) + offset); |
| return LE32_TO_CPU( p[0] ); |
| } |
| |
| #endif |
| |
| #endif /* MMIO_H */ |
