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-rw-r--r--arch/parisc/include/asm/fixmap.h30
1 files changed, 30 insertions, 0 deletions
diff --git a/arch/parisc/include/asm/fixmap.h b/arch/parisc/include/asm/fixmap.h
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+++ b/arch/parisc/include/asm/fixmap.h
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+#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 *vmalloc_start;
+#define PCXL_DMA_MAP_SIZE (8*1024*1024)
+#define VMALLOC_START ((unsigned long)vmalloc_start)
+#define VMALLOC_END (KERNEL_MAP_END)
+#endif /*__ASSEMBLY__*/
+
+#endif /*_ASM_FIXMAP_H*/