/* * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * * Copyright (C) 2000-2003 Silicon Graphics, Inc. All rights reserved. */ #ifndef _ASM_SN_SN2_IO_H #define _ASM_SN_SN2_IO_H extern void * sn_io_addr(unsigned long port); /* Forward definition */ extern void sn_mmiob(void); /* Forward definition */ #include <asm/intrinsics.h> #define __sn_mf_a() ia64_mfa() extern void sn_dma_flush(unsigned long); #define __sn_inb ___sn_inb #define __sn_inw ___sn_inw #define __sn_inl ___sn_inl #define __sn_outb ___sn_outb #define __sn_outw ___sn_outw #define __sn_outl ___sn_outl #define __sn_readb ___sn_readb #define __sn_readw ___sn_readw #define __sn_readl ___sn_readl #define __sn_readq ___sn_readq #define __sn_readb_relaxed ___sn_readb_relaxed #define __sn_readw_relaxed ___sn_readw_relaxed #define __sn_readl_relaxed ___sn_readl_relaxed #define __sn_readq_relaxed ___sn_readq_relaxed /* * The following routines are SN Platform specific, called when * a reference is made to inX/outX set macros. SN Platform * inX set of macros ensures that Posted DMA writes on the * Bridge is flushed. * * The routines should be self explainatory. */ static inline unsigned int ___sn_inb (unsigned long port) { volatile unsigned char *addr; unsigned char ret = -1; if ((addr = sn_io_addr(port))) { ret = *addr; __sn_mf_a(); sn_dma_flush((unsigned long)addr); } return ret; } static inline unsigned int ___sn_inw (unsigned long port) { volatile unsigned short *addr; unsigned short ret = -1; if ((addr = sn_io_addr(port))) { ret = *addr; __sn_mf_a(); sn_dma_flush((unsigned long)addr); } return ret; } static inline unsigned int ___sn_inl (unsigned long port) { volatile unsigned int *addr; unsigned int ret = -1; if ((addr = sn_io_addr(port))) { ret = *addr; __sn_mf_a(); sn_dma_flush((unsigned long)addr); } return ret; } static inline void ___sn_outb (unsigned char val, unsigned long port) { volatile unsigned char *addr; if ((addr = sn_io_addr(port))) { *addr = val; sn_mmiob(); } } static inline void ___sn_outw (unsigned short val, unsigned long port) { volatile unsigned short *addr; if ((addr = sn_io_addr(port))) { *addr = val; sn_mmiob(); } } static inline void ___sn_outl (unsigned int val, unsigned long port) { volatile unsigned int *addr; if ((addr = sn_io_addr(port))) { *addr = val; sn_mmiob(); } } /* * The following routines are SN Platform specific, called when * a reference is made to readX/writeX set macros. SN Platform * readX set of macros ensures that Posted DMA writes on the * Bridge is flushed. * * The routines should be self explainatory. */ static inline unsigned char ___sn_readb (void *addr) { unsigned char val; val = *(volatile unsigned char *)addr; __sn_mf_a(); sn_dma_flush((unsigned long)addr); return val; } static inline unsigned short ___sn_readw (void *addr) { unsigned short val; val = *(volatile unsigned short *)addr; __sn_mf_a(); sn_dma_flush((unsigned long)addr); return val; } static inline unsigned int ___sn_readl (void *addr) { unsigned int val; val = *(volatile unsigned int *) addr; __sn_mf_a(); sn_dma_flush((unsigned long)addr); return val; } static inline unsigned long ___sn_readq (void *addr) { unsigned long val; val = *(volatile unsigned long *) addr; __sn_mf_a(); sn_dma_flush((unsigned long)addr); return val; } /* * For generic and SN2 kernels, we have a set of fast access * PIO macros. These macros are provided on SN Platform * because the normal inX and readX macros perform an * additional task of flushing Post DMA request on the Bridge. * * These routines should be self explainatory. */ static inline unsigned int sn_inb_fast (unsigned long port) { volatile unsigned char *addr = (unsigned char *)port; unsigned char ret; ret = *addr; __sn_mf_a(); return ret; } static inline unsigned int sn_inw_fast (unsigned long port) { volatile unsigned short *addr = (unsigned short *)port; unsigned short ret; ret = *addr; __sn_mf_a(); return ret; } static inline unsigned int sn_inl_fast (unsigned long port) { volatile unsigned int *addr = (unsigned int *)port; unsigned int ret; ret = *addr; __sn_mf_a(); return ret; } static inline unsigned char ___sn_readb_relaxed (void *addr) { return *(volatile unsigned char *)addr; } static inline unsigned short ___sn_readw_relaxed (void *addr) { return *(volatile unsigned short *)addr; } static inline unsigned int ___sn_readl_relaxed (void *addr) { return *(volatile unsigned int *) addr; } static inline unsigned long ___sn_readq_relaxed (void *addr) { return *(volatile unsigned long *) addr; } #endif