Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/arch/m68k/sun3/dvma.c b/arch/m68k/sun3/dvma.c
new file mode 100644
index 0000000..d2b3093
--- /dev/null
+++ b/arch/m68k/sun3/dvma.c
@@ -0,0 +1,71 @@
+/*
+ * linux/arch/m68k/sun3/dvma.c
+ *
+ * Written by Sam Creasey
+ *
+ * Sun3 IOMMU routines used for dvma accesses.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/bootmem.h>
+#include <linux/list.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/sun3mmu.h>
+#include <asm/dvma.h>
+
+
+static unsigned long ptelist[120];
+
+inline unsigned long dvma_page(unsigned long kaddr, unsigned long vaddr)
+{
+ unsigned long pte;
+ unsigned long j;
+ pte_t ptep;
+
+ j = *(volatile unsigned long *)kaddr;
+ *(volatile unsigned long *)kaddr = j;
+
+ ptep = pfn_pte(virt_to_pfn(kaddr), PAGE_KERNEL);
+ pte = pte_val(ptep);
+// printk("dvma_remap: addr %lx -> %lx pte %08lx len %x\n",
+// kaddr, vaddr, pte, len);
+ if(ptelist[(vaddr & 0xff000) >> PAGE_SHIFT] != pte) {
+ sun3_put_pte(vaddr, pte);
+ ptelist[(vaddr & 0xff000) >> PAGE_SHIFT] = pte;
+ }
+
+ return (vaddr + (kaddr & ~PAGE_MASK));
+
+}
+
+int dvma_map_iommu(unsigned long kaddr, unsigned long baddr,
+ int len)
+{
+
+ unsigned long end;
+ unsigned long vaddr;
+
+ vaddr = dvma_btov(baddr);
+
+ end = vaddr + len;
+
+ while(vaddr < end) {
+ dvma_page(kaddr, vaddr);
+ kaddr += PAGE_SIZE;
+ vaddr += PAGE_SIZE;
+ }
+
+ return 0;
+
+}
+
+void sun3_dvma_init(void)
+{
+
+ memset(ptelist, 0, sizeof(ptelist));
+
+
+}
