[MIPS] Kill tlb-andes.c.

    
Basically identical to c-r4k.c, so maintaining one is really enough.
Signed-off-by: Thiemo Seufer <ths@networkno.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/mm/Makefile

@@ -12,7 +12,7 @@ obj-$(CONFIG_HIGHMEM)		+= highmem.o
 obj-$(CONFIG_CPU_MIPS32)	+= c-r4k.o cex-gen.o pg-r4k.o tlb-r4k.o
 obj-$(CONFIG_CPU_MIPS64)	+= c-r4k.o cex-gen.o pg-r4k.o tlb-r4k.o
 obj-$(CONFIG_CPU_NEVADA)	+= c-r4k.o cex-gen.o pg-r4k.o tlb-r4k.o
-obj-$(CONFIG_CPU_R10000)	+= c-r4k.o cex-gen.o pg-r4k.o tlb-andes.o
+obj-$(CONFIG_CPU_R10000)	+= c-r4k.o cex-gen.o pg-r4k.o tlb-r4k.o
 obj-$(CONFIG_CPU_R3000)		+= c-r3k.o tlb-r3k.o pg-r4k.o
 obj-$(CONFIG_CPU_R4300)		+= c-r4k.o cex-gen.o pg-r4k.o tlb-r4k.o
 obj-$(CONFIG_CPU_R4X00)		+= c-r4k.o cex-gen.o pg-r4k.o tlb-r4k.o

arch/mips/mm/tlb-andes.c

-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 1997, 1998, 1999 Ralf Baechle (ralf@gnu.org)
- * Copyright (C) 1999 Silicon Graphics, Inc.
- * Copyright (C) 2000 Kanoj Sarcar (kanoj@sgi.com)
- */
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <asm/page.h>
-#include <asm/pgtable.h>
-#include <asm/system.h>
-#include <asm/mmu_context.h>
-
-extern void build_tlb_refill_handler(void);
-
-#define NTLB_ENTRIES       64
-#define NTLB_ENTRIES_HALF  32
-
-void local_flush_tlb_all(void)
-{
-	unsigned long flags;
-	unsigned long old_ctx;
-	unsigned long entry;
-
-	local_irq_save(flags);
-	/* Save old context and create impossible VPN2 value */
-	old_ctx = read_c0_entryhi() & ASID_MASK;
-	write_c0_entryhi(CKSEG0);
-	write_c0_entrylo0(0);
-	write_c0_entrylo1(0);
-
-	entry = read_c0_wired();
-
-	/* Blast 'em all away. */
-	while (entry < NTLB_ENTRIES) {
-		write_c0_index(entry);
-		tlb_write_indexed();
-		entry++;
-	}
-	write_c0_entryhi(old_ctx);
-	local_irq_restore(flags);
-}
-
-void local_flush_tlb_mm(struct mm_struct *mm)
-{
-	int cpu = smp_processor_id();
-	if (cpu_context(cpu, mm) != 0) {
-		drop_mmu_context(mm,cpu);
-	}
-}
-
-void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
-                           unsigned long end)
-{
-	struct mm_struct *mm = vma->vm_mm;
-	int cpu = smp_processor_id();
-
-	if (cpu_context(cpu, mm) != 0) {
-		unsigned long flags;
-		int size;
-
-		local_irq_save(flags);
-		size = (end - start + (PAGE_SIZE - 1)) >> PAGE_SHIFT;
-		size = (size + 1) >> 1;
-		if (size <= NTLB_ENTRIES_HALF) {
-			int oldpid = (read_c0_entryhi() & ASID_MASK);
-			int newpid = (cpu_context(smp_processor_id(), mm)
-				      & ASID_MASK);
-
-			start &= (PAGE_MASK << 1);
-			end += ((PAGE_SIZE << 1) - 1);
-			end &= (PAGE_MASK << 1);
-			while(start < end) {
-				int idx;
-
-				write_c0_entryhi(start | newpid);
-				start += (PAGE_SIZE << 1);
-				tlb_probe();
-				idx = read_c0_index();
-				write_c0_entrylo0(0);
-				write_c0_entrylo1(0);
-				write_c0_entryhi(CKSEG0);
-				if(idx < 0)
-					continue;
-				tlb_write_indexed();
-			}
-			write_c0_entryhi(oldpid);
-		} else {
-			drop_mmu_context(mm, cpu);
-		}
-		local_irq_restore(flags);
-	}
-}
-
-void local_flush_tlb_kernel_range(unsigned long start, unsigned long end)
-{
-	unsigned long flags;
-	int size;
-
-	size = (end - start + (PAGE_SIZE - 1)) >> PAGE_SHIFT;
-	size = (size + 1) >> 1;
-
-	local_irq_save(flags);
-	if (size <= NTLB_ENTRIES_HALF) {
-		int pid = read_c0_entryhi();
-
-		start &= (PAGE_MASK << 1);
-		end += ((PAGE_SIZE << 1) - 1);
-		end &= (PAGE_MASK << 1);
-
-		while (start < end) {
-			int idx;
-
-			write_c0_entryhi(start);
-			start += (PAGE_SIZE << 1);
-			tlb_probe();
-			idx = read_c0_index();
-			write_c0_entrylo0(0);
-			write_c0_entrylo1(0);
-			write_c0_entryhi(CKSEG0 + (idx << (PAGE_SHIFT+1)));
-			if (idx < 0)
-				continue;
-			tlb_write_indexed();
-		}
-		write_c0_entryhi(pid);
-	} else {
-		local_flush_tlb_all();
-	}
-	local_irq_restore(flags);
-}
-
-void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
-{
-	if (cpu_context(smp_processor_id(), vma->vm_mm) != 0) {
-		unsigned long flags;
-		int oldpid, newpid, idx;
-
-		newpid = (cpu_context(smp_processor_id(), vma->vm_mm) &
-			  ASID_MASK);
-		page &= (PAGE_MASK << 1);
-		local_irq_save(flags);
-		oldpid = (read_c0_entryhi() & ASID_MASK);
-		write_c0_entryhi(page | newpid);
-		tlb_probe();
-		idx = read_c0_index();
-		write_c0_entrylo0(0);
-		write_c0_entrylo1(0);
-		write_c0_entryhi(CKSEG0);
-		if (idx < 0)
-			goto finish;
-		tlb_write_indexed();
-
-	finish:
-		write_c0_entryhi(oldpid);
-		local_irq_restore(flags);
-	}
-}
-
-/*
- * This one is only used for pages with the global bit set so we don't care
- * much about the ASID.
- */
-void local_flush_tlb_one(unsigned long page)
-{
-	unsigned long flags;
-	int oldpid, idx;
-
-	local_irq_save(flags);
-	page &= (PAGE_MASK << 1);
-	oldpid = read_c0_entryhi() & 0xff;
-	write_c0_entryhi(page);
-	tlb_probe();
-	idx = read_c0_index();
-	write_c0_entrylo0(0);
-	write_c0_entrylo1(0);
-	if (idx >= 0) {
-		/* Make sure all entries differ. */
-		write_c0_entryhi(CKSEG0+(idx<<(PAGE_SHIFT+1)));
-		tlb_write_indexed();
-	}
-	write_c0_entryhi(oldpid);
-
-	local_irq_restore(flags);
-}
-
-/* XXX Simplify this.  On the R10000 writing a TLB entry for an virtual
-   address that already exists will overwrite the old entry and not result
-   in TLB malfunction or TLB shutdown.  */
-void __update_tlb(struct vm_area_struct * vma, unsigned long address, pte_t pte)
-{
-	unsigned long flags;
-	pgd_t *pgdp;
-	pud_t *pudp;
-	pmd_t *pmdp;
-	pte_t *ptep;
-	int idx, pid;
-
-	/*
-	 * Handle debugger faulting in for debugee.
-	 */
-	if (current->active_mm != vma->vm_mm)
-		return;
-
-	pid = read_c0_entryhi() & ASID_MASK;
-
-	if ((pid != (cpu_context(smp_processor_id(), vma->vm_mm) & ASID_MASK))
-	    || (cpu_context(smp_processor_id(), vma->vm_mm) == 0)) {
-		printk(KERN_WARNING
-		       "%s: Wheee, bogus tlbpid mmpid=%d tlbpid=%d\n",
-		       __FUNCTION__, (int) (cpu_context(smp_processor_id(),
-		       vma->vm_mm) & ASID_MASK), pid);
-	}
-
-	local_irq_save(flags);
-	address &= (PAGE_MASK << 1);
-	write_c0_entryhi(address | (pid));
-	pgdp = pgd_offset(vma->vm_mm, address);
-	tlb_probe();
-	pudp = pud_offset(pgdp, address);
-	pmdp = pmd_offset(pudp, address);
-	idx = read_c0_index();
-	ptep = pte_offset_map(pmdp, address);
-	write_c0_entrylo0(pte_val(*ptep++) >> 6);
-	write_c0_entrylo1(pte_val(*ptep) >> 6);
-	write_c0_entryhi(address | pid);
-	if (idx < 0) {
-		tlb_write_random();
-	} else {
-		tlb_write_indexed();
-	}
-	write_c0_entryhi(pid);
-	local_irq_restore(flags);
-}
-
-void __init tlb_init(void)
-{
-	/*
-	 * You should never change this register:
-	 *   - On R4600 1.7 the tlbp never hits for pages smaller than
-	 *     the value in the c0_pagemask register.
-	 *   - The entire mm handling assumes the c0_pagemask register to
-	 *     be set for 4kb pages.
-	 */
-	write_c0_pagemask(PM_4K);
-	write_c0_wired(0);
-	write_c0_framemask(0);
-
-        /* From this point on the ARC firmware is dead.  */
-	local_flush_tlb_all();
-
-	/* Did I tell you that ARC SUCKS?  */
-
-	build_tlb_refill_handler();
-}

arch/mips/mm/tlb-r4k.c

@@ -424,8 +424,13 @@ void __init tlb_init(void)
 	probe_tlb(config);
 	write_c0_pagemask(PM_DEFAULT_MASK);
 	write_c0_wired(0);
+	write_c0_framemask(0);
 	temp_tlb_entry = current_cpu_data.tlbsize - 1;
+
+        /* From this point on the ARC firmware is dead.  */
 	local_flush_tlb_all();
 
+	/* Did I tell you that ARC SUCKS?  */
+
 	build_tlb_refill_handler();
 }