/* * linux/include/asm-arm/arch-omap/io.h * * IO definitions for TI OMAP processors and boards * * Copied from linux/include/asm-arm/arch-sa1100/io.h * Copyright (C) 1997-1999 Russell King * * 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * 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., * 675 Mass Ave, Cambridge, MA 02139, USA. * * Modifications: * 06-12-1997 RMK Created. * 07-04-1999 RMK Major cleanup */ #ifndef __ASM_ARM_ARCH_IO_H #define __ASM_ARM_ARCH_IO_H #include <asm/hardware.h> #define IO_SPACE_LIMIT 0xffffffff /* * We don't actually have real ISA nor PCI buses, but there is so many * drivers out there that might just work if we fake them... */ #define __io(a) ((void __iomem *)(PCIO_BASE + (a))) #define __mem_pci(a) (a) #define __mem_isa(a) (a) /* * ---------------------------------------------------------------------------- * I/O mapping * ---------------------------------------------------------------------------- */ #define PCIO_BASE 0 #if defined(CONFIG_ARCH_OMAP1) #define IO_PHYS 0xFFFB0000 #define IO_OFFSET 0x01000000 /* Virtual IO = 0xfefb0000 */ #define IO_SIZE 0x40000 #define IO_VIRT (IO_PHYS - IO_OFFSET) #define IO_ADDRESS(pa) ((pa) - IO_OFFSET) #define io_p2v(pa) ((pa) - IO_OFFSET) #define io_v2p(va) ((va) + IO_OFFSET) #elif defined(CONFIG_ARCH_OMAP2) /* We map both L3 and L4 on OMAP2 */ #define L3_24XX_PHYS L3_24XX_BASE /* 0x68000000 */ #define L3_24XX_VIRT 0xf8000000 #define L3_24XX_SIZE SZ_1M /* 44kB of 128MB used, want 1MB sect */ #define L4_24XX_PHYS L4_24XX_BASE /* 0x48000000 */ #define L4_24XX_VIRT 0xd8000000 #define L4_24XX_SIZE SZ_1M /* 1MB of 128MB used, want 1MB sect */ #define IO_OFFSET 0x90000000 #define IO_ADDRESS(pa) ((pa) + IO_OFFSET) /* Works for L3 and L4 */ #define io_p2v(pa) ((pa) + IO_OFFSET) /* Works for L3 and L4 */ #define io_v2p(va) ((va) - IO_OFFSET) /* Works for L3 and L4 */ #endif #ifndef __ASSEMBLER__ /* * Functions to access the OMAP IO region * * NOTE: - Use omap_read/write[bwl] for physical register addresses * - Use __raw_read/write[bwl]() for virtual register addresses * - Use IO_ADDRESS(phys_addr) to convert registers to virtual addresses * - DO NOT use hardcoded virtual addresses to allow changing the * IO address space again if needed */ #define omap_readb(a) (*(volatile unsigned char *)IO_ADDRESS(a)) #define omap_readw(a) (*(volatile unsigned short *)IO_ADDRESS(a)) #define omap_readl(a) (*(volatile unsigned int *)IO_ADDRESS(a)) #define omap_writeb(v,a) (*(volatile unsigned char *)IO_ADDRESS(a) = (v)) #define omap_writew(v,a) (*(volatile unsigned short *)IO_ADDRESS(a) = (v)) #define omap_writel(v,a) (*(volatile unsigned int *)IO_ADDRESS(a) = (v)) /* 16 bit uses LDRH/STRH, base +/- offset_8 */ typedef struct { volatile u16 offset[256]; } __regbase16; #define __REGV16(vaddr) ((__regbase16 *)((vaddr)&~0xff)) \ ->offset[((vaddr)&0xff)>>1] #define __REG16(paddr) __REGV16(io_p2v(paddr)) /* 8/32 bit uses LDR/STR, base +/- offset_12 */ typedef struct { volatile u8 offset[4096]; } __regbase8; #define __REGV8(vaddr) ((__regbase8 *)((vaddr)&~4095)) \ ->offset[((vaddr)&4095)>>0] #define __REG8(paddr) __REGV8(io_p2v(paddr)) typedef struct { volatile u32 offset[4096]; } __regbase32; #define __REGV32(vaddr) ((__regbase32 *)((vaddr)&~4095)) \ ->offset[((vaddr)&4095)>>2] #define __REG32(paddr) __REGV32(io_p2v(paddr)) extern void omap1_map_common_io(void); extern void omap1_init_common_hw(void); extern void omap2_map_common_io(void); extern void omap2_init_common_hw(void); #else #define __REG8(paddr) io_p2v(paddr) #define __REG16(paddr) io_p2v(paddr) #define __REG32(paddr) io_p2v(paddr) #endif #endif