| Kevin Hilman | 7c6337e | 2007-04-30 19:37:19 +0100 | [diff] [blame] | 1 | /* |
| 2 | * DaVinci memory space definitions |
| 3 | * |
| 4 | * Author: Kevin Hilman, MontaVista Software, Inc. <source@mvista.com> |
| 5 | * |
| 6 | * 2007 (c) MontaVista Software, Inc. This file is licensed under |
| 7 | * the terms of the GNU General Public License version 2. This program |
| 8 | * is licensed "as is" without any warranty of any kind, whether express |
| 9 | * or implied. |
| 10 | */ |
| 11 | #ifndef __ASM_ARCH_MEMORY_H |
| 12 | #define __ASM_ARCH_MEMORY_H |
| 13 | |
| 14 | /************************************************************************** |
| 15 | * Included Files |
| 16 | **************************************************************************/ |
| 17 | #include <asm/page.h> |
| 18 | #include <asm/sizes.h> |
| 19 | |
| 20 | /************************************************************************** |
| 21 | * Definitions |
| 22 | **************************************************************************/ |
| 23 | #define DAVINCI_DDR_BASE 0x80000000 |
| 24 | #define DAVINCI_IRAM_BASE 0x00008000 /* ARM Internal RAM */ |
| 25 | |
| 26 | #define PHYS_OFFSET DAVINCI_DDR_BASE |
| 27 | |
| 28 | /* |
| 29 | * Increase size of DMA-consistent memory region |
| 30 | */ |
| 31 | #define CONSISTENT_DMA_SIZE (14<<20) |
| 32 | |
| 33 | #ifndef __ASSEMBLY__ |
| 34 | /* |
| 35 | * Restrict DMA-able region to workaround silicon bug. The bug |
| 36 | * restricts buffers available for DMA to video hardware to be |
| 37 | * below 128M |
| 38 | */ |
| 39 | static inline void |
| 40 | __arch_adjust_zones(int node, unsigned long *size, unsigned long *holes) |
| 41 | { |
| 42 | unsigned int sz = (128<<20) >> PAGE_SHIFT; |
| 43 | |
| 44 | if (node != 0) |
| 45 | sz = 0; |
| 46 | |
| 47 | size[1] = size[0] - sz; |
| 48 | size[0] = sz; |
| 49 | } |
| 50 | |
| 51 | #define arch_adjust_zones(node, zone_size, holes) \ |
| 52 | if ((meminfo.bank[0].size >> 20) > 128) __arch_adjust_zones(node, zone_size, holes) |
| 53 | |
| 54 | #define ISA_DMA_THRESHOLD (PHYS_OFFSET + (128<<20) - 1) |
| 55 | |
| 56 | #endif |
| 57 | |
| 58 | /* |
| 59 | * Bus address is physical address |
| 60 | */ |
| 61 | #define __virt_to_bus(x) __virt_to_phys(x) |
| 62 | #define __bus_to_virt(x) __phys_to_virt(x) |
| 63 | |
| 64 | #endif /* __ASM_ARCH_MEMORY_H */ |