2 /* dvma support routines */
4 #include <linux/kernel.h>
6 #include <linux/bootmem.h>
7 #include <linux/list.h>
9 #include <asm/pgtable.h>
10 #include <asm/sun3mmu.h>
14 static unsigned long ptelist[120];
16 inline unsigned long dvma_page(unsigned long kaddr, unsigned long vaddr)
22 j = *(volatile unsigned long *)kaddr;
23 *(volatile unsigned long *)kaddr = j;
25 ptep = __mk_pte(kaddr, PAGE_KERNEL);
27 // printk("dvma_remap: addr %lx -> %lx pte %08lx len %x\n",
28 // kaddr, vaddr, pte, len);
29 if(ptelist[(vaddr & 0xff000) >> PAGE_SHIFT] != pte) {
30 sun3_put_pte(vaddr, pte);
31 ptelist[(vaddr & 0xff000) >> PAGE_SHIFT] = pte;
34 return (vaddr + (kaddr & ~PAGE_MASK));
38 int dvma_map_iommu(unsigned long kaddr, unsigned long baddr,
45 vaddr = dvma_btov(baddr);
50 dvma_page(kaddr, vaddr);
59 void sun3_dvma_init(void)
62 memset(ptelist, 0, sizeof(ptelist));