1/* 2 * arch/arm/mach-tegra/include/mach/io.h 3 * 4 * Copyright (C) 2010 Google, Inc. 5 * 6 * Author: 7 * Colin Cross <ccross@google.com> 8 * Erik Gilling <konkers@google.com> 9 * 10 * This software is licensed under the terms of the GNU General Public 11 * License version 2, as published by the Free Software Foundation, and 12 * may be copied, distributed, and modified under those terms. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 */ 20 21#ifndef __MACH_TEGRA_IO_H 22#define __MACH_TEGRA_IO_H 23 24#define IO_SPACE_LIMIT 0xffffffff 25 26/* On TEGRA, many peripherals are very closely packed in 27 * two 256MB io windows (that actually only use about 64KB 28 * at the start of each). 29 * 30 * We will just map the first 1MB of each window (to minimize 31 * pt entries needed) and provide a macro to transform physical 32 * io addresses to an appropriate void __iomem *. 33 * 34 */ 35 36#define IO_CPU_PHYS 0x50040000 37#define IO_CPU_VIRT 0xFE000000 38#define IO_CPU_SIZE SZ_16K 39 40#define IO_PPSB_PHYS 0x60000000 41#define IO_PPSB_VIRT 0xFE200000 42#define IO_PPSB_SIZE SZ_1M 43 44#define IO_APB_PHYS 0x70000000 45#define IO_APB_VIRT 0xFE300000 46#define IO_APB_SIZE SZ_1M 47 48#define IO_TO_VIRT_BETWEEN(p, st, sz) ((p) >= (st) && (p) < ((st) + (sz))) 49#define IO_TO_VIRT_XLATE(p, pst, vst) (((p) - (pst) + (vst))) 50 51#define IO_TO_VIRT(n) ( \ 52 IO_TO_VIRT_BETWEEN((n), IO_PPSB_PHYS, IO_PPSB_SIZE) ? \ 53 IO_TO_VIRT_XLATE((n), IO_PPSB_PHYS, IO_PPSB_VIRT) : \ 54 IO_TO_VIRT_BETWEEN((n), IO_APB_PHYS, IO_APB_SIZE) ? \ 55 IO_TO_VIRT_XLATE((n), IO_APB_PHYS, IO_APB_VIRT) : \ 56 IO_TO_VIRT_BETWEEN((n), IO_CPU_PHYS, IO_CPU_SIZE) ? \ 57 IO_TO_VIRT_XLATE((n), IO_CPU_PHYS, IO_CPU_VIRT) : \ 58 0) 59 60#ifndef __ASSEMBLER__ 61 62#define __arch_ioremap(p, s, t) tegra_ioremap(p, s, t) 63#define __arch_iounmap(v) tegra_iounmap(v) 64 65void __iomem *tegra_ioremap(unsigned long phys, size_t size, unsigned int type); 66void tegra_iounmap(volatile void __iomem *addr); 67 68#define IO_ADDRESS(n) ((void __iomem *) IO_TO_VIRT(n)) 69 70static inline void __iomem *__io(unsigned long addr) 71{ 72 return (void __iomem *)addr; 73} 74#define __io(a) __io(a) 75#define __mem_pci(a) (a) 76 77#endif 78 79#endif 80