/* * U-boot - io-kernel.h * * Copyright (c) 2005-2007 Analog Devices Inc. * * (C) Copyright 2000-2004 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * See file CREDITS for list of people who contributed to this * project. * * This program 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 of * the License, or (at your option) any later version. * * This program 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 this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, * MA 02110-1301 USA */ #ifndef _BLACKFIN_IO_H #define _BLACKFIN_IO_H #ifdef __KERNEL__ #include /* * These are for ISA/PCI shared memory _only_ and should never be used * on any other type of memory, including Zorro memory. They are meant to * access the bus in the bus byte order which is little-endian!. * * readX/writeX() are used to access memory mapped devices. On some * architectures the memory mapped IO stuff needs to be accessed * differently. On the m68k architecture, we just read/write the * memory location directly. */ /* ++roman: The assignments to temp. vars avoid that gcc sometimes generates * two accesses to memory, which may be undesireable for some devices. */ #define readb(addr) ({ unsigned char __v = (*(volatile unsigned char *) (addr));asm("ssync;"); __v; }) #define readw(addr) ({ unsigned short __v = (*(volatile unsigned short *) (addr)); asm("ssync;");__v; }) #define readl(addr) ({ unsigned int __v = (*(volatile unsigned int *) (addr));asm("ssync;"); __v; }) #define writeb(b,addr) (void)((*(volatile unsigned char *) (addr)) = (b)) #define writew(b,addr) (void)((*(volatile unsigned short *) (addr)) = (b)) #define writel(b,addr) (void)((*(volatile unsigned int *) (addr)) = (b)) #define __raw_readb readb #define __raw_readw readw #define __raw_readl readl #define __raw_writeb writeb #define __raw_writew writew #define __raw_writel writel #define memset_io(a,b,c) memset((void *)(a),(b),(c)) #define memcpy_fromio(a,b,c) memcpy((a),(void *)(b),(c)) #define memcpy_toio(a,b,c) memcpy((void *)(a),(b),(c)) #define inb(addr) cf_inb((volatile unsigned char*)(addr)) #define inw(addr) readw(addr) #define inl(addr) readl(addr) #define outb(x,addr) cf_outb((unsigned char)(x), (volatile unsigned char*)(addr)) #define outw(x,addr) ((void) writew(x,addr)) #define outl(x,addr) ((void) writel(x,addr)) #define inb_p(addr) inb(addr) #define inw_p(addr) inw(addr) #define inl_p(addr) inl(addr) #define outb_p(x,addr) outb(x,addr) #define outw_p(x,addr) outw(x,addr) #define outl_p(x,addr) outl(x,addr) #define insb(port, addr, count) memcpy((void*)addr, (void*)port, count) #define insw(port, addr, count) cf_insw((unsigned short*)addr, (unsigned short*)(port), (count)) #define insl(port, addr, count) memcpy((void*)addr, (void*)port, (4*count)) #define outsb(port, addr, count) memcpy((void*)port, (void*)addr, count) #define outsw(port,addr,count) cf_outsw((unsigned short*)(port), (unsigned short*)addr, (count)) #define outsl(port, addr, count) memcpy((void*)port, (void*)addr, (4*count)) #define IO_SPACE_LIMIT 0xffff /* Values for nocacheflag and cmode */ #define IOMAP_FULL_CACHING 0 #define IOMAP_NOCACHE_SER 1 #define IOMAP_NOCACHE_NONSER 2 #define IOMAP_WRITETHROUGH 3 #ifndef __ASSEMBLY__ extern void *__ioremap(unsigned long physaddr, unsigned long size, int cacheflag); extern void __iounmap(void *addr, unsigned long size); extern inline void *ioremap(unsigned long physaddr, unsigned long size) { return __ioremap(physaddr, size, IOMAP_NOCACHE_SER); } extern inline void *ioremap_nocache(unsigned long physaddr, unsigned long size) { return __ioremap(physaddr, size, IOMAP_NOCACHE_SER); } extern inline void *ioremap_writethrough(unsigned long physaddr, unsigned long size) { return __ioremap(physaddr, size, IOMAP_WRITETHROUGH); } extern inline void *ioremap_fullcache(unsigned long physaddr, unsigned long size) { return __ioremap(physaddr, size, IOMAP_FULL_CACHING); } extern void iounmap(void *addr); /* Nothing to do */ extern void blkfin_inv_cache_all(void); #endif #define dma_cache_inv(_start,_size) do { blkfin_inv_cache_all();} while (0) #define dma_cache_wback(_start,_size) do { } while (0) #define dma_cache_wback_inv(_start,_size) do { blkfin_inv_cache_all();} while (0) /* Pages to physical address... */ #define page_to_phys(page) ((page - mem_map) #define page_to_bus(page) ((page - mem_map) #define mm_ptov(vaddr) ((void *) (vaddr)) #define mm_vtop(vaddr) ((unsigned long) (vaddr)) #define phys_to_virt(vaddr) ((void *) (vaddr)) #define virt_to_phys(vaddr) ((unsigned long) (vaddr)) #define virt_to_bus virt_to_phys #define bus_to_virt phys_to_virt #endif #endif
