1 files changed, 70 insertions, 0 deletions
diff --git a/include/asm-arm26/tlbflush.h b/include/asm-arm26/tlbflush.h
new file mode 100644
index 0000000..f79c1cb
--- /dev/null
+++ b/include/asm-arm26/tlbflush.h
@@ -0,0 +1,70 @@
+#ifndef __ASMARM_TLBFLUSH_H
+#define __ASMARM_TLBFLUSH_H
+
+/*
+ * TLB flushing:
+ *
+ *  - flush_tlb_all() flushes all processes TLBs
+ *  - flush_tlb_mm(mm) flushes the specified mm context TLB's
+ *  - flush_tlb_page(vma, vmaddr) flushes one page
+ *  - flush_tlb_range(vma, start, end) flushes a range of pages
+ */
+
+#define flush_tlb_all()				memc_update_all()
+#define flush_tlb_mm(mm)			memc_update_mm(mm)
+#define flush_tlb_page(vma, vmaddr)		do { printk("flush_tlb_page\n");} while (0)  // IS THIS RIGHT?
+#define flush_tlb_range(vma,start,end)		\
+		do { memc_update_mm(vma->vm_mm); (void)(start); (void)(end); } while (0)
+#define flush_tlb_pgtables(mm,start,end)        do { printk("flush_tlb_pgtables\n");} while (0)
+#define flush_tlb_kernel_range(s,e)             do { printk("flush_tlb_range\n");} while (0)
+
+/*
+ * The following handle the weird MEMC chip
+ */
+static inline void memc_update_all(void)
+{
+	struct task_struct *p;
+	cpu_memc_update_all(init_mm.pgd);
+	for_each_process(p) {
+		if (!p->mm)
+			continue;
+		cpu_memc_update_all(p->mm->pgd);
+	}
+	processor._set_pgd(current->active_mm->pgd);
+}
+
+static inline void memc_update_mm(struct mm_struct *mm)
+{
+	cpu_memc_update_all(mm->pgd);
+
+	if (mm == current->active_mm)
+		processor._set_pgd(mm->pgd);
+}
+
+static inline void
+memc_clear(struct mm_struct *mm, struct page *page)
+{
+	cpu_memc_update_entry(mm->pgd, (unsigned long) page_address(page), 0);
+
+	if (mm == current->active_mm)
+		processor._set_pgd(mm->pgd);
+}
+
+static inline void
+memc_update_addr(struct mm_struct *mm, pte_t pte, unsigned long vaddr)
+{
+	cpu_memc_update_entry(mm->pgd, pte_val(pte), vaddr);
+
+	if (mm == current->active_mm)
+		processor._set_pgd(mm->pgd);
+}
+
+static inline void
+update_mmu_cache(struct vm_area_struct *vma, unsigned long addr, pte_t pte)
+{
+	struct mm_struct *mm = vma->vm_mm;
+printk("update_mmu_cache\n");
+	memc_update_addr(mm, pte, addr);
+}
+
+#endif