| 1 |
1276 |
phoenix |
/*
|
| 2 |
|
|
* linux/include/asm-arm/arch-integrator/mmu.h
|
| 3 |
|
|
*
|
| 4 |
|
|
* Copyright (C) 1999 ARM Limited
|
| 5 |
|
|
*
|
| 6 |
|
|
* This program is free software; you can redistribute it and/or modify
|
| 7 |
|
|
* it under the terms of the GNU General Public License as published by
|
| 8 |
|
|
* the Free Software Foundation; either version 2 of the License, or
|
| 9 |
|
|
* (at your option) any later version.
|
| 10 |
|
|
*
|
| 11 |
|
|
* This program is distributed in the hope that it will be useful,
|
| 12 |
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
| 13 |
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
| 14 |
|
|
* GNU General Public License for more details.
|
| 15 |
|
|
*
|
| 16 |
|
|
* You should have received a copy of the GNU General Public License
|
| 17 |
|
|
* along with this program; if not, write to the Free Software
|
| 18 |
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
| 19 |
|
|
*/
|
| 20 |
|
|
#ifndef __ASM_ARCH_MMU_H
|
| 21 |
|
|
#define __ASM_ARCH_MMU_H
|
| 22 |
|
|
|
| 23 |
|
|
/*
|
| 24 |
|
|
* Task size: 3GB
|
| 25 |
|
|
*/
|
| 26 |
|
|
#define TASK_SIZE (0xc0000000UL)
|
| 27 |
|
|
#define TASK_SIZE_26 (0x04000000UL)
|
| 28 |
|
|
|
| 29 |
|
|
/*
|
| 30 |
|
|
* This decides where the kernel will search for a free chunk of vm
|
| 31 |
|
|
* space during mmap's.
|
| 32 |
|
|
*/
|
| 33 |
|
|
#define TASK_UNMAPPED_BASE (TASK_SIZE / 3)
|
| 34 |
|
|
|
| 35 |
|
|
/*
|
| 36 |
|
|
* Page offset: 3GB
|
| 37 |
|
|
*/
|
| 38 |
|
|
#define PAGE_OFFSET (0xc0000000UL)
|
| 39 |
|
|
#define PHYS_OFFSET (0x00000000UL)
|
| 40 |
|
|
|
| 41 |
|
|
/*
|
| 42 |
|
|
* On integrator, the dram is contiguous
|
| 43 |
|
|
*/
|
| 44 |
|
|
#define __virt_to_phys__is_a_macro
|
| 45 |
|
|
#define __virt_to_phys(vpage) ((vpage) - PAGE_OFFSET)
|
| 46 |
|
|
#define __phys_to_virt__is_a_macro
|
| 47 |
|
|
#define __phys_to_virt(ppage) ((ppage) + PAGE_OFFSET)
|
| 48 |
|
|
|
| 49 |
|
|
/*
|
| 50 |
|
|
* Virtual view <-> DMA view memory address translations
|
| 51 |
|
|
* virt_to_bus: Used to translate the virtual address to an
|
| 52 |
|
|
* address suitable to be passed to set_dma_addr
|
| 53 |
|
|
* bus_to_virt: Used to convert an address for DMA operations
|
| 54 |
|
|
* to an address that the kernel can use.
|
| 55 |
|
|
*/
|
| 56 |
|
|
#define __virt_to_bus__is_a_macro
|
| 57 |
|
|
#define __virt_to_bus(x) (x - PAGE_OFFSET + INTEGRATOR_HDR0_SDRAM_BASE)
|
| 58 |
|
|
#define __bus_to_virt__is_a_macro
|
| 59 |
|
|
#define __bus_to_virt(x) (x - INTEGRATOR_HDR0_SDRAM_BASE + PAGE_OFFSET)
|
| 60 |
|
|
|
| 61 |
|
|
#endif
|
