diff options
| author | Yuval Adam <_@yuv.al> | 2017-08-30 08:25:59 +0000 |
|---|---|---|
| committer | Yuval Adam <_@yuv.al> | 2017-08-30 08:25:59 +0000 |
| commit | 8e4bff4cab0ddac6060645b0715210484d02ff40 (patch) | |
| tree | 3a5c3024371a04692a3a6d9974d001cdff8ebf84 /arch/parisc/include/asm/fixmap.h | |
Diffstat (limited to 'arch/parisc/include/asm/fixmap.h')
| -rw-r--r-- | arch/parisc/include/asm/fixmap.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/arch/parisc/include/asm/fixmap.h b/arch/parisc/include/asm/fixmap.h new file mode 100644 index 00000000..6fec4d4a --- /dev/null +++ b/arch/parisc/include/asm/fixmap.h @@ -0,0 +1,30 @@ +#ifndef _ASM_FIXMAP_H +#define _ASM_FIXMAP_H + +/* + * This file defines the locations of the fixed mappings on parisc. + * + * All of the values in this file are machine virtual addresses. + * + * All of the values in this file must be <4GB (because of assembly + * loading restrictions). If you place this region anywhere above + * __PAGE_OFFSET, you must adjust the memory map accordingly */ + +/* The alias region is used in kernel space to do copy/clear to or + * from areas congruently mapped with user space. It is 8MB large + * and must be 16MB aligned */ +#define TMPALIAS_MAP_START ((__PAGE_OFFSET) - 16*1024*1024) +/* This is the kernel area for all maps (vmalloc, dma etc.) most + * usually, it extends up to TMPALIAS_MAP_START. Virtual addresses + * 0..GATEWAY_PAGE_SIZE are reserved for the gateway page */ +#define KERNEL_MAP_START (GATEWAY_PAGE_SIZE) +#define KERNEL_MAP_END (TMPALIAS_MAP_START) + +#ifndef __ASSEMBLY__ +extern void *parisc_vmalloc_start; +#define PCXL_DMA_MAP_SIZE (8*1024*1024) +#define VMALLOC_START ((unsigned long)parisc_vmalloc_start) +#define VMALLOC_END (KERNEL_MAP_END) +#endif /*__ASSEMBLY__*/ + +#endif /*_ASM_FIXMAP_H*/ |