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/sh/mm/tlb-sh3.c b/arch/sh/mm/tlb-sh3.c
new file mode 100644
index 0000000..7a0d5c1
--- /dev/null
+++ b/arch/sh/mm/tlb-sh3.c
@@ -0,0 +1,92 @@
+/*
+ * arch/sh/mm/tlb-sh3.c
+ *
+ * SH-3 specific TLB operations
+ *
+ * Copyright (C) 1999 Niibe Yutaka
+ * Copyright (C) 2002 Paul Mundt
+ *
+ * Released under the terms of the GNU GPL v2.0.
+ */
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/types.h>
+#include <linux/ptrace.h>
+#include <linux/mman.h>
+#include <linux/mm.h>
+#include <linux/smp.h>
+#include <linux/smp_lock.h>
+#include <linux/interrupt.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/uaccess.h>
+#include <asm/pgalloc.h>
+#include <asm/mmu_context.h>
+#include <asm/cacheflush.h>
+
+void update_mmu_cache(struct vm_area_struct * vma,
+ unsigned long address, pte_t pte)
+{
+ unsigned long flags;
+ unsigned long pteval;
+ unsigned long vpn;
+
+ /* Ptrace may call this routine. */
+ if (vma && current->active_mm != vma->vm_mm)
+ return;
+
+#if defined(CONFIG_SH7705_CACHE_32KB)
+ struct page *page;
+ page = pte_page(pte);
+ if (VALID_PAGE(page) && !test_bit(PG_mapped, &page->flags)) {
+ unsigned long phys = pte_val(pte) & PTE_PHYS_MASK;
+ __flush_wback_region((void *)P1SEGADDR(phys), PAGE_SIZE);
+ __set_bit(PG_mapped, &page->flags);
+ }
+#endif
+
+ local_irq_save(flags);
+
+ /* Set PTEH register */
+ vpn = (address & MMU_VPN_MASK) | get_asid();
+ ctrl_outl(vpn, MMU_PTEH);
+
+ pteval = pte_val(pte);
+
+ /* Set PTEL register */
+ pteval &= _PAGE_FLAGS_HARDWARE_MASK; /* drop software flags */
+ /* conveniently, we want all the software flags to be 0 anyway */
+ ctrl_outl(pteval, MMU_PTEL);
+
+ /* Load the TLB */
+ asm volatile("ldtlb": /* no output */ : /* no input */ : "memory");
+ local_irq_restore(flags);
+}
+
+void __flush_tlb_page(unsigned long asid, unsigned long page)
+{
+ unsigned long addr, data;
+ int i, ways = MMU_NTLB_WAYS;
+
+ /*
+ * NOTE: PTEH.ASID should be set to this MM
+ * _AND_ we need to write ASID to the array.
+ *
+ * It would be simple if we didn't need to set PTEH.ASID...
+ */
+ addr = MMU_TLB_ADDRESS_ARRAY | (page & 0x1F000);
+ data = (page & 0xfffe0000) | asid; /* VALID bit is off */
+
+ if ((cpu_data->flags & CPU_HAS_MMU_PAGE_ASSOC)) {
+ addr |= MMU_PAGE_ASSOC_BIT;
+ ways = 1; /* we already know the way .. */
+ }
+
+ for (i = 0; i < ways; i++)
+ ctrl_outl(data, addr + (i << 8));
+}
+