Update of /cvsroot/linux-vax/kernel-2.4/arch/vax/mm
In directory usw-pr-cvs1:/tmp/cvs-serv31609/arch/vax/mm
Modified Files:
init.c
Log Message:
implement DMA memory zone for ISA heritage peripherals.
Tell vaxlance.c to use memory in DMA zone for now.
Index: init.c
===================================================================
RCS file: /cvsroot/linux-vax/kernel-2.4/arch/vax/mm/init.c,v
retrieving revision 1.11
retrieving revision 1.12
diff -u -r1.11 -r1.12
--- init.c 2001/06/07 21:23:51 1.11
+++ init.c 2001/06/16 14:05:30 1.12
@@ -41,8 +41,17 @@
void __init paging_init()
{
unsigned long zones_size[MAX_NR_ZONES] = { 0, 0, 0 };
- /* max_pfn is the number of hwptes */
- zones_size[ZONE_DMA] = max_pfn;
+ unsigned int max_dma, max_norm;
+
+ max_dma = virt_to_phys((char *)MAX_DMA_ADDRESS) >> PAGE_SHIFT;
+
+ /* max_pfn is the number of 4k ptes */
+ if (max_pfn < max_dma) {
+ zones_size[ZONE_DMA] = max_pfn;
+ } else {
+ zones_size[ZONE_DMA] = max_dma;
+ zones_size[ZONE_NORMAL] = max_pfn - max_dma;
+ }
free_area_init(zones_size);
}
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