32 lines
1.2 KiB
C
32 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_FIXMAP_H
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#define _ASM_FIXMAP_H
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/*
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* This file defines the locations of the fixed mappings on parisc.
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*
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* All of the values in this file are machine virtual addresses.
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*
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* All of the values in this file must be <4GB (because of assembly
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* loading restrictions). If you place this region anywhere above
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* __PAGE_OFFSET, you must adjust the memory map accordingly */
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/* The alias region is used in kernel space to do copy/clear to or
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* from areas congruently mapped with user space. It is 8MB large
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* and must be 16MB aligned */
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#define TMPALIAS_MAP_START ((__PAGE_OFFSET) - 16*1024*1024)
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/* This is the kernel area for all maps (vmalloc, dma etc.) most
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* usually, it extends up to TMPALIAS_MAP_START. Virtual addresses
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* 0..GATEWAY_PAGE_SIZE are reserved for the gateway page */
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#define KERNEL_MAP_START (GATEWAY_PAGE_SIZE)
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#define KERNEL_MAP_END (TMPALIAS_MAP_START)
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#ifndef __ASSEMBLY__
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extern void *parisc_vmalloc_start;
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#define PCXL_DMA_MAP_SIZE (8*1024*1024)
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#define VMALLOC_START ((unsigned long)parisc_vmalloc_start)
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#define VMALLOC_END (KERNEL_MAP_END)
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#endif /*__ASSEMBLY__*/
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#endif /*_ASM_FIXMAP_H*/
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