Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next

Pull sparc updates from David Miller:

1) Kill off support for sun4c and Cypress sun4m chips.

   And as a result we were able to also kill off that ugly btfixup thing
   that required multi-stage links of the final vmlinux image in the
   Kbuild system.  This should make the kbuild maintainers really happy.

   Thanks a lot to Sam Ravnborg for his tireless efforts to get this
   going.

2) Convert sparc64 to nobootmem.  I suspect now with sparc32 being a lot
   cleaner, it should be able to fall in line and modernize in this area
   too.

3) Make sparc32 use generic clockevents, from Tkhai Kirill.

[ I fixed up the BPF rules, and tried to clean up the build rules too.
  But I don't have - or want - a sparc cross-build environment, so the
  BPF rule bug and the related build cleanup was all done with just a
  bare "make -n" pseudo-test.      - Linus ]

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next: (110 commits)
  sparc32: use flushi when run-time patching in per_cpu_patch
  sparc32: fix cpuid_patch run-time patching
  sparc32: drop unused inline functions in srmmu.c
  sparc32: drop unused functions in pgtsrmmu.h
  sparc32,leon: move leon mmu functions to leon_mm.c
  sparc32,leon: remove duplicate definitions in leon.h
  sparc32,leon: remove duplicate UART register definitions
  sparc32,leon: move leon ASI definitions to asi.h
  sparc32: move trap table to a separate file
  sparc64: renamed ttable.S to ttable_64.S
  sparc32: Remove asm/sysen.h header.
  sparc32: Delete asm/smpprim.h
  sparc32: Remove unused empty_bad_page{,_table} declarations.
  sparc32: Kill boot_cpu_id4
  sparc32: Move GET_PROCESSOR*_ID() out of asm/asmmacro.h
  sparc32: Remove completely unused code from asm/cache.h
  sparc32: Add ucmpdi2.o to obj-y instead of lib-y.
  sparc32: add ucmpdi2
  sparc: introduce arch/sparc/Kbuild
  sparc: remove obsolete documentation
  ...

14 files changed, 523 insertions, 3917 deletions

diff --git a/arch/sparc/mm/Makefile b/arch/sparc/mm/Makefile
index 301421c11291..69ffd3112fed 100644
--- a/arch/sparc/mm/Makefile
+++ b/arch/sparc/mm/Makefile
@@ -7,8 +7,7 @@ ccflags-y := -Werror
 obj-$(CONFIG_SPARC64)   += ultra.o tlb.o tsb.o gup.o
 obj-y                   += fault_$(BITS).o
 obj-y                   += init_$(BITS).o
-obj-$(CONFIG_SPARC32)   += loadmmu.o
-obj-$(CONFIG_SPARC32)   += extable.o btfixup.o srmmu.o iommu.o io-unit.o
+obj-$(CONFIG_SPARC32)   += extable.o srmmu.o iommu.o io-unit.o
 obj-$(CONFIG_SPARC32)   += hypersparc.o viking.o tsunami.o swift.o
 obj-$(CONFIG_SPARC_LEON)+= leon_mm.o
 
@@ -17,9 +16,3 @@ obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o
 
 # Only used by sparc32
 obj-$(CONFIG_HIGHMEM)   += highmem.o
-
-ifdef CONFIG_SMP
-obj-$(CONFIG_SPARC32) += nosun4c.o
-else
-obj-$(CONFIG_SPARC32) += sun4c.o
-endif
diff --git a/arch/sparc/mm/btfixup.c b/arch/sparc/mm/btfixup.c
deleted file mode 100644
index 09d6af22db2d..000000000000
--- a/arch/sparc/mm/btfixup.c
+++ /dev/null
@@ -1,328 +0,0 @@
-/* btfixup.c: Boot time code fixup and relocator, so that
- * we can get rid of most indirect calls to achieve single
- * image sun4c and srmmu kernel.
- *
- * Copyright (C) 1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <asm/btfixup.h>
-#include <asm/page.h>
-#include <asm/pgalloc.h>
-#include <asm/pgtable.h>
-#include <asm/oplib.h>
-#include <asm/cacheflush.h>
-
-#define BTFIXUP_OPTIMIZE_NOP
-#define BTFIXUP_OPTIMIZE_OTHER
-
-extern char *srmmu_name;
-static char version[] __initdata = "Boot time fixup v1.6. 4/Mar/98 Jakub Jelinek (jj@ultra.linux.cz). Patching kernel for ";
-static char str_sun4c[] __initdata = "sun4c\n";
-static char str_srmmu[] __initdata = "srmmu[%s]/";
-static char str_iommu[] __initdata = "iommu\n";
-static char str_iounit[] __initdata = "io-unit\n";
-
-static int visited __initdata = 0;
-extern unsigned int ___btfixup_start[], ___btfixup_end[], __init_begin[], __init_end[], __init_text_end[];
-extern unsigned int _stext[], _end[], __start___ksymtab[], __stop___ksymtab[];
-static char wrong_f[] __initdata = "Trying to set f fixup %p to invalid function %08x\n";
-static char wrong_b[] __initdata = "Trying to set b fixup %p to invalid function %08x\n";
-static char wrong_s[] __initdata = "Trying to set s fixup %p to invalid value %08x\n";
-static char wrong_h[] __initdata = "Trying to set h fixup %p to invalid value %08x\n";
-static char wrong_a[] __initdata = "Trying to set a fixup %p to invalid value %08x\n";
-static char wrong[] __initdata = "Wrong address for %c fixup %p\n";
-static char insn_f[] __initdata = "Fixup f %p refers to weird instructions at %p[%08x,%08x]\n";
-static char insn_b[] __initdata = "Fixup b %p doesn't refer to a SETHI at %p[%08x]\n";
-static char insn_s[] __initdata = "Fixup s %p doesn't refer to an OR at %p[%08x]\n";
-static char insn_h[] __initdata = "Fixup h %p doesn't refer to a SETHI at %p[%08x]\n";
-static char insn_a[] __initdata = "Fixup a %p doesn't refer to a SETHI nor OR at %p[%08x]\n";
-static char insn_i[] __initdata = "Fixup i %p doesn't refer to a valid instruction at %p[%08x]\n";
-static char fca_und[] __initdata = "flush_cache_all undefined in btfixup()\n";
-static char wrong_setaddr[] __initdata = "Garbled CALL/INT patch at %p[%08x,%08x,%08x]=%08x\n";
-
-#ifdef BTFIXUP_OPTIMIZE_OTHER
-static void __init set_addr(unsigned int *addr, unsigned int q1, int fmangled, unsigned int value)
-{
-	if (!fmangled)
-		*addr = value;
-	else {
-		unsigned int *q = (unsigned int *)q1;
-		if (*addr == 0x01000000) {
-			/* Noped */
-			*q = value;
-		} else if (addr[-1] == *q) {
-			/* Moved */
-			addr[-1] = value;
-			*q = value;
-		} else {
-			prom_printf(wrong_setaddr, addr-1, addr[-1], *addr, *q, value);
-			prom_halt();
-		}
-	}
-}
-#else
-static inline void set_addr(unsigned int *addr, unsigned int q1, int fmangled, unsigned int value)
-{
-	*addr = value;
-}
-#endif
-
-void __init btfixup(void)
-{
-	unsigned int *p, *q;
-	int type, count;
-	unsigned insn;
-	unsigned *addr;
-	int fmangled = 0;
-	void (*flush_cacheall)(void);
-	
-	if (!visited) {
-		visited++;
-		printk(version);
-		if (ARCH_SUN4C)
-			printk(str_sun4c);
-		else {
-			printk(str_srmmu, srmmu_name);
-			if (sparc_cpu_model == sun4d)
-				printk(str_iounit);
-			else
-				printk(str_iommu);
-		}
-	}
-	for (p = ___btfixup_start; p < ___btfixup_end; ) {
-		count = p[2];
-		q = p + 3;
-		switch (type = *(unsigned char *)p) {
-		case 'f': 
-			count = p[3];
-			q = p + 4;
-			if (((p[0] & 1) || p[1]) 
-			    && ((p[1] & 3) || (unsigned *)(p[1]) < _stext || (unsigned *)(p[1]) >= _end)) {
-				prom_printf(wrong_f, p, p[1]);
-				prom_halt();
-			}
-			break;
-		case 'b':
-			if (p[1] < (unsigned long)__init_begin || p[1] >= (unsigned long)__init_text_end || (p[1] & 3)) {
-				prom_printf(wrong_b, p, p[1]);
-				prom_halt();
-			}
-			break;
-		case 's':
-			if (p[1] + 0x1000 >= 0x2000) {
-				prom_printf(wrong_s, p, p[1]);
-				prom_halt();
-			}
-			break;
-		case 'h':
-			if (p[1] & 0x3ff) {
-				prom_printf(wrong_h, p, p[1]);
-				prom_halt();
-			}
-			break;
-		case 'a':
-			if (p[1] + 0x1000 >= 0x2000 && (p[1] & 0x3ff)) {
-				prom_printf(wrong_a, p, p[1]);
-				prom_halt();
-			}
-			break;
-		}
-		if (p[0] & 1) {
-			p[0] &= ~1;
-			while (count) {
-				fmangled = 0;
-				addr = (unsigned *)*q;
-				if (addr < _stext || addr >= _end) {
-					prom_printf(wrong, type, p);
-					prom_halt();
-				}
-				insn = *addr;
-#ifdef BTFIXUP_OPTIMIZE_OTHER				
-				if (type != 'f' && q[1]) {
-					insn = *(unsigned int *)q[1];
-					if (!insn || insn == 1)
-						insn = *addr;
-					else
-						fmangled = 1;
-				}
-#endif
-				switch (type) {
-				case 'f':	/* CALL */
-					if (addr >= __start___ksymtab && addr < __stop___ksymtab) {
-						*addr = p[1];
-						break;
-					} else if (!q[1]) {
-						if ((insn & 0xc1c00000) == 0x01000000) { /* SETHI */
-							*addr = (insn & 0xffc00000) | (p[1] >> 10); break;
-						} else if ((insn & 0xc1f82000) == 0x80102000) { /* OR X, %LO(i), Y */
-							*addr = (insn & 0xffffe000) | (p[1] & 0x3ff); break;
-						} else if ((insn & 0xc0000000) != 0x40000000) { /* !CALL */
-				bad_f:
-							prom_printf(insn_f, p, addr, insn, addr[1]);
-							prom_halt();
-						}
-					} else if (q[1] != 1)
-						addr[1] = q[1];
-					if (p[2] == BTFIXUPCALL_NORM) {
-				norm_f:	
-						*addr = 0x40000000 | ((p[1] - (unsigned)addr) >> 2);
-						q[1] = 0;
-						break;
-					}
-#ifndef BTFIXUP_OPTIMIZE_NOP
-					goto norm_f;
-#else
-					if (!(addr[1] & 0x80000000)) {
-						if ((addr[1] & 0xc1c00000) != 0x01000000)	/* !SETHI */
-							goto bad_f; /* CALL, Bicc, FBfcc, CBccc are weird in delay slot, aren't they? */
-					} else {
-						if ((addr[1] & 0x01800000) == 0x01800000) {
-							if ((addr[1] & 0x01f80000) == 0x01e80000) {
-								/* RESTORE */
-								goto norm_f; /* It is dangerous to patch that */
-							}
-							goto bad_f;
-						}
-						if ((addr[1] & 0xffffe003) == 0x9e03e000) {
-							/* ADD %O7, XX, %o7 */
-							int displac = (addr[1] << 19);
-							
-							displac = (displac >> 21) + 2;
-							*addr = (0x10800000) + (displac & 0x3fffff);
-							q[1] = addr[1];
-							addr[1] = p[2];
-							break;
-						}
-						if ((addr[1] & 0x201f) == 0x200f || (addr[1] & 0x7c000) == 0x3c000)
-							goto norm_f; /* Someone is playing bad tricks with us: rs1 or rs2 is o7 */
-						if ((addr[1] & 0x3e000000) == 0x1e000000)
-							goto norm_f; /* rd is %o7. We'd better take care. */
-					}
-					if (p[2] == BTFIXUPCALL_NOP) {
-						*addr = 0x01000000;
-						q[1] = 1;
-						break;
-					}
-#ifndef BTFIXUP_OPTIMIZE_OTHER
-					goto norm_f;
-#else
-					if (addr[1] == 0x01000000) {	/* NOP in the delay slot */
-						q[1] = addr[1];
-						*addr = p[2];
-						break;
-					}
-					if ((addr[1] & 0xc0000000) != 0xc0000000) {
-						/* Not a memory operation */
-						if ((addr[1] & 0x30000000) == 0x10000000) {
-							/* Ok, non-memory op with rd %oX */
-							if ((addr[1] & 0x3e000000) == 0x1c000000)
-								goto bad_f; /* Aiee. Someone is playing strange %sp tricks */
-							if ((addr[1] & 0x3e000000) > 0x12000000 ||
-							    ((addr[1] & 0x3e000000) == 0x12000000 &&
-							     p[2] != BTFIXUPCALL_STO1O0 && p[2] != BTFIXUPCALL_SWAPO0O1) ||
-							    ((p[2] & 0xffffe000) == BTFIXUPCALL_RETINT(0))) {
-								/* Nobody uses the result. We can nop it out. */
-								*addr = p[2];
-								q[1] = addr[1];
-								addr[1] = 0x01000000;
-								break;
-							}
-							if ((addr[1] & 0xf1ffffe0) == 0x90100000) {
-								/* MOV %reg, %Ox */
-								if ((addr[1] & 0x3e000000) == 0x10000000 &&
-								    (p[2] & 0x7c000) == 0x20000) {
-								    	/* Ok, it is call xx; mov reg, %o0 and call optimizes
-								    	   to doing something on %o0. Patch the patch. */
-									*addr = (p[2] & ~0x7c000) | ((addr[1] & 0x1f) << 14);
-									q[1] = addr[1];
-									addr[1] = 0x01000000;
-									break;
-								}
-								if ((addr[1] & 0x3e000000) == 0x12000000 &&
-								    p[2] == BTFIXUPCALL_STO1O0) {
-								    	*addr = (p[2] & ~0x3e000000) | ((addr[1] & 0x1f) << 25);
-								    	q[1] = addr[1];
-								    	addr[1] = 0x01000000;
-								    	break;
-								}
-							}
-						}
-					}
-					*addr = addr[1];
-					q[1] = addr[1];
-					addr[1] = p[2];
-					break;
-#endif /* BTFIXUP_OPTIMIZE_OTHER */
-#endif /* BTFIXUP_OPTIMIZE_NOP */
-				case 'b':	/* BLACKBOX */
-					/* Has to be sethi i, xx */
-					if ((insn & 0xc1c00000) != 0x01000000) {
-						prom_printf(insn_b, p, addr, insn);
-						prom_halt();
-					} else {
-						void (*do_fixup)(unsigned *);
-						
-						do_fixup = (void (*)(unsigned *))p[1];
-						do_fixup(addr);
-					}
-					break;
-				case 's':	/* SIMM13 */
-					/* Has to be or %g0, i, xx */
-					if ((insn & 0xc1ffe000) != 0x80102000) {
-						prom_printf(insn_s, p, addr, insn);
-						prom_halt();
-					}
-					set_addr(addr, q[1], fmangled, (insn & 0xffffe000) | (p[1] & 0x1fff));
-					break;
-				case 'h':	/* SETHI */
-					/* Has to be sethi i, xx */
-					if ((insn & 0xc1c00000) != 0x01000000) {
-						prom_printf(insn_h, p, addr, insn);
-						prom_halt();
-					}
-					set_addr(addr, q[1], fmangled, (insn & 0xffc00000) | (p[1] >> 10));
-					break;
-				case 'a':	/* HALF */
-					/* Has to be sethi i, xx or or %g0, i, xx */
-					if ((insn & 0xc1c00000) != 0x01000000 &&
-					    (insn & 0xc1ffe000) != 0x80102000) {
-						prom_printf(insn_a, p, addr, insn);
-						prom_halt();
-					}
-					if (p[1] & 0x3ff)
-						set_addr(addr, q[1], fmangled, 
-							(insn & 0x3e000000) | 0x80102000 | (p[1] & 0x1fff));
-					else
-						set_addr(addr, q[1], fmangled, 
-							(insn & 0x3e000000) | 0x01000000 | (p[1] >> 10));
-					break;
-				case 'i':	/* INT */
-					if ((insn & 0xc1c00000) == 0x01000000) /* %HI */
-						set_addr(addr, q[1], fmangled, (insn & 0xffc00000) | (p[1] >> 10));
-					else if ((insn & 0x80002000) == 0x80002000) /* %LO */
-						set_addr(addr, q[1], fmangled, (insn & 0xffffe000) | (p[1] & 0x3ff));
-					else {
-						prom_printf(insn_i, p, addr, insn);
-						prom_halt();
-					}
-					break;
-				}
-				count -= 2;
-				q += 2;
-			}
-		} else
-			p = q + count;
-	}
-#ifdef CONFIG_SMP
-	flush_cacheall = (void (*)(void))BTFIXUPVAL_CALL(local_flush_cache_all);
-#else
-	flush_cacheall = (void (*)(void))BTFIXUPVAL_CALL(flush_cache_all);
-#endif
-	if (!flush_cacheall) {
-		prom_printf(fca_und);
-		prom_halt();
-	}
-	(*flush_cacheall)();
-}
diff --git a/arch/sparc/mm/fault_32.c b/arch/sparc/mm/fault_32.c
index df3155a17991..f46cf6be3370 100644
--- a/arch/sparc/mm/fault_32.c
+++ b/arch/sparc/mm/fault_32.c
@@ -24,29 +24,19 @@
 
 #include <asm/page.h>
 #include <asm/pgtable.h>
-#include <asm/memreg.h>
 #include <asm/openprom.h>
 #include <asm/oplib.h>
 #include <asm/smp.h>
 #include <asm/traps.h>
 #include <asm/uaccess.h>
 
-extern int prom_node_root;
-
 int show_unhandled_signals = 1;
 
 /* At boot time we determine these two values necessary for setting
  * up the segment maps and page table entries (pte's).
  */
 
-int num_segmaps, num_contexts;
-int invalid_segment;
-
-/* various Virtual Address Cache parameters we find at boot time... */
-
-int vac_size, vac_linesize, vac_do_hw_vac_flushes;
-int vac_entries_per_context, vac_entries_per_segment;
-int vac_entries_per_page;
+int num_contexts;
 
 /* Return how much physical memory we have.  */
 unsigned long probe_memory(void)
@@ -60,55 +50,36 @@ unsigned long probe_memory(void)
 	return total;
 }
 
-extern void sun4c_complete_all_stores(void);
-
-/* Whee, a level 15 NMI interrupt memory error.  Let's have fun... */
-asmlinkage void sparc_lvl15_nmi(struct pt_regs *regs, unsigned long serr,
-				unsigned long svaddr, unsigned long aerr,
-				unsigned long avaddr)
-{
-	sun4c_complete_all_stores();
-	printk("FAULT: NMI received\n");
-	printk("SREGS: Synchronous Error %08lx\n", serr);
-	printk("       Synchronous Vaddr %08lx\n", svaddr);
-	printk("      Asynchronous Error %08lx\n", aerr);
-	printk("      Asynchronous Vaddr %08lx\n", avaddr);
-	if (sun4c_memerr_reg)
-		printk("     Memory Parity Error %08lx\n", *sun4c_memerr_reg);
-	printk("REGISTER DUMP:\n");
-	show_regs(regs);
-	prom_halt();
-}
-
 static void unhandled_fault(unsigned long, struct task_struct *,
 		struct pt_regs *) __attribute__ ((noreturn));
 
-static void unhandled_fault(unsigned long address, struct task_struct *tsk,
-                     struct pt_regs *regs)
+static void __noreturn unhandled_fault(unsigned long address,
+				       struct task_struct *tsk,
+				       struct pt_regs *regs)
 {
-	if((unsigned long) address < PAGE_SIZE) {
+	if ((unsigned long) address < PAGE_SIZE) {
 		printk(KERN_ALERT
 		    "Unable to handle kernel NULL pointer dereference\n");
 	} else {
-		printk(KERN_ALERT "Unable to handle kernel paging request "
-		       "at virtual address %08lx\n", address);
+		printk(KERN_ALERT "Unable to handle kernel paging request at virtual address %08lx\n",
+		       address);
 	}
 	printk(KERN_ALERT "tsk->{mm,active_mm}->context = %08lx\n",
 		(tsk->mm ? tsk->mm->context : tsk->active_mm->context));
 	printk(KERN_ALERT "tsk->{mm,active_mm}->pgd = %08lx\n",
 		(tsk->mm ? (unsigned long) tsk->mm->pgd :
-		 	(unsigned long) tsk->active_mm->pgd));
+			(unsigned long) tsk->active_mm->pgd));
 	die_if_kernel("Oops", regs);
 }
 
-asmlinkage int lookup_fault(unsigned long pc, unsigned long ret_pc, 
+asmlinkage int lookup_fault(unsigned long pc, unsigned long ret_pc,
 			    unsigned long address)
 {
 	struct pt_regs regs;
 	unsigned long g2;
 	unsigned int insn;
 	int i;
-	
+
 	i = search_extables_range(ret_pc, &g2);
 	switch (i) {
 	case 3:
@@ -128,14 +99,14 @@ asmlinkage int lookup_fault(unsigned long pc, unsigned long ret_pc,
 		/* for _from_ macros */
 		insn = *((unsigned int *) pc);
 		if (!((insn >> 21) & 1) || ((insn>>19)&0x3f) == 15)
-			return 2; 
-		break; 
+			return 2;
+		break;
 
 	default:
 		break;
 	}
 
-	memset(&regs, 0, sizeof (regs));
+	memset(&regs, 0, sizeof(regs));
 	regs.pc = pc;
 	regs.npc = pc + 4;
 	__asm__ __volatile__(
@@ -198,11 +169,10 @@ static unsigned long compute_si_addr(struct pt_regs *regs, int text_fault)
 	if (text_fault)
 		return regs->pc;
 
-	if (regs->psr & PSR_PS) {
+	if (regs->psr & PSR_PS)
 		insn = *(unsigned int *) regs->pc;
-	} else {
+	else
 		__get_user(insn, (unsigned int *) regs->pc);
-	}
 
 	return safe_compute_effective_address(regs, insn);
 }
@@ -228,7 +198,7 @@ asmlinkage void do_sparc_fault(struct pt_regs *regs, int text_fault, int write,
 	unsigned int flags = (FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE |
 			      (write ? FAULT_FLAG_WRITE : 0));
 
-	if(text_fault)
+	if (text_fault)
 		address = regs->pc;
 
 	/*
@@ -241,36 +211,32 @@ asmlinkage void do_sparc_fault(struct pt_regs *regs, int text_fault, int write,
 	 * nothing more.
 	 */
 	code = SEGV_MAPERR;
-	if (!ARCH_SUN4C && address >= TASK_SIZE)
+	if (address >= TASK_SIZE)
 		goto vmalloc_fault;
 
 	/*
 	 * If we're in an interrupt or have no user
 	 * context, we must not take the fault..
 	 */
-        if (in_atomic() || !mm)
-                goto no_context;
+	if (in_atomic() || !mm)
+		goto no_context;
 
 	perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, address);
 
 retry:
 	down_read(&mm->mmap_sem);
 
-	/*
-	 * The kernel referencing a bad kernel pointer can lock up
-	 * a sun4c machine completely, so we must attempt recovery.
-	 */
-	if(!from_user && address >= PAGE_OFFSET)
+	if (!from_user && address >= PAGE_OFFSET)
 		goto bad_area;
 
 	vma = find_vma(mm, address);
-	if(!vma)
+	if (!vma)
 		goto bad_area;
-	if(vma->vm_start <= address)
+	if (vma->vm_start <= address)
 		goto good_area;
-	if(!(vma->vm_flags & VM_GROWSDOWN))
+	if (!(vma->vm_flags & VM_GROWSDOWN))
 		goto bad_area;
-	if(expand_stack(vma, address))
+	if (expand_stack(vma, address))
 		goto bad_area;
 	/*
 	 * Ok, we have a good vm_area for this memory access, so
@@ -278,12 +244,12 @@ retry:
 	 */
 good_area:
 	code = SEGV_ACCERR;
-	if(write) {
-		if(!(vma->vm_flags & VM_WRITE))
+	if (write) {
+		if (!(vma->vm_flags & VM_WRITE))
 			goto bad_area;
 	} else {
 		/* Allow reads even for write-only mappings */
-		if(!(vma->vm_flags & (VM_READ | VM_EXEC)))
+		if (!(vma->vm_flags & (VM_READ | VM_EXEC)))
 			goto bad_area;
 	}
 
@@ -349,14 +315,16 @@ no_context:
 	g2 = regs->u_regs[UREG_G2];
 	if (!from_user) {
 		fixup = search_extables_range(regs->pc, &g2);
-		if (fixup > 10) { /* Values below are reserved for other things */
+		/* Values below 10 are reserved for other things */
+		if (fixup > 10) {
 			extern const unsigned __memset_start[];
 			extern const unsigned __memset_end[];
 			extern const unsigned __csum_partial_copy_start[];
 			extern const unsigned __csum_partial_copy_end[];
 
 #ifdef DEBUG_EXCEPTIONS
-			printk("Exception: PC<%08lx> faddr<%08lx>\n", regs->pc, address);
+			printk("Exception: PC<%08lx> faddr<%08lx>\n",
+			       regs->pc, address);
 			printk("EX_TABLE: insn<%08lx> fixup<%08x> g2<%08lx>\n",
 				regs->pc, fixup, g2);
 #endif
@@ -364,7 +332,7 @@ no_context:
 			     regs->pc < (unsigned long)__memset_end) ||
 			    (regs->pc >= (unsigned long)__csum_partial_copy_start &&
 			     regs->pc < (unsigned long)__csum_partial_copy_end)) {
-			        regs->u_regs[UREG_I4] = address;
+				regs->u_regs[UREG_I4] = address;
 				regs->u_regs[UREG_I5] = regs->pc;
 			}
 			regs->u_regs[UREG_G2] = g2;
@@ -373,8 +341,8 @@ no_context:
 			return;
 		}
 	}
-	
-	unhandled_fault (address, tsk, regs);
+
+	unhandled_fault(address, tsk, regs);
 	do_exit(SIGKILL);
 
 /*
@@ -420,97 +388,12 @@ vmalloc_fault:
 
 		if (pmd_present(*pmd) || !pmd_present(*pmd_k))
 			goto bad_area_nosemaphore;
+
 		*pmd = *pmd_k;
 		return;
 	}
 }
 
-asmlinkage void do_sun4c_fault(struct pt_regs *regs, int text_fault, int write,
-			       unsigned long address)
-{
-	extern void sun4c_update_mmu_cache(struct vm_area_struct *,
-					   unsigned long,pte_t *);
-	extern pte_t *sun4c_pte_offset_kernel(pmd_t *,unsigned long);
-	struct task_struct *tsk = current;
-	struct mm_struct *mm = tsk->mm;
-	pgd_t *pgdp;
-	pte_t *ptep;
-
-	if (text_fault) {
-		address = regs->pc;
-	} else if (!write &&
-		   !(regs->psr & PSR_PS)) {
-		unsigned int insn, __user *ip;
-
-		ip = (unsigned int __user *)regs->pc;
-		if (!get_user(insn, ip)) {
-			if ((insn & 0xc1680000) == 0xc0680000)
-				write = 1;
-		}
-	}
-
-	if (!mm) {
-		/* We are oopsing. */
-		do_sparc_fault(regs, text_fault, write, address);
-		BUG();	/* P3 Oops already, you bitch */
-	}
-
-	pgdp = pgd_offset(mm, address);
-	ptep = sun4c_pte_offset_kernel((pmd_t *) pgdp, address);
-
-	if (pgd_val(*pgdp)) {
-	    if (write) {
-		if ((pte_val(*ptep) & (_SUN4C_PAGE_WRITE|_SUN4C_PAGE_PRESENT))
-				   == (_SUN4C_PAGE_WRITE|_SUN4C_PAGE_PRESENT)) {
-			unsigned long flags;
-
-			*ptep = __pte(pte_val(*ptep) | _SUN4C_PAGE_ACCESSED |
-				      _SUN4C_PAGE_MODIFIED |
-				      _SUN4C_PAGE_VALID |
-				      _SUN4C_PAGE_DIRTY);
-
-			local_irq_save(flags);
-			if (sun4c_get_segmap(address) != invalid_segment) {
-				sun4c_put_pte(address, pte_val(*ptep));
-				local_irq_restore(flags);
-				return;
-			}
-			local_irq_restore(flags);
-		}
-	    } else {
-		if ((pte_val(*ptep) & (_SUN4C_PAGE_READ|_SUN4C_PAGE_PRESENT))
-				   == (_SUN4C_PAGE_READ|_SUN4C_PAGE_PRESENT)) {
-			unsigned long flags;
-
-			*ptep = __pte(pte_val(*ptep) | _SUN4C_PAGE_ACCESSED |
-				      _SUN4C_PAGE_VALID);
-
-			local_irq_save(flags);
-			if (sun4c_get_segmap(address) != invalid_segment) {
-				sun4c_put_pte(address, pte_val(*ptep));
-				local_irq_restore(flags);
-				return;
-			}
-			local_irq_restore(flags);
-		}
-	    }
-	}
-
-	/* This conditional is 'interesting'. */
-	if (pgd_val(*pgdp) && !(write && !(pte_val(*ptep) & _SUN4C_PAGE_WRITE))
-	    && (pte_val(*ptep) & _SUN4C_PAGE_VALID))
-		/* Note: It is safe to not grab the MMAP semaphore here because
-		 *       we know that update_mmu_cache() will not sleep for
-		 *       any reason (at least not in the current implementation)
-		 *       and therefore there is no danger of another thread getting
-		 *       on the CPU and doing a shrink_mmap() on this vma.
-		 */
-		sun4c_update_mmu_cache (find_vma(current->mm, address), address,
-					ptep);
-	else
-		do_sparc_fault(regs, text_fault, write, address);
-}
-
 /* This always deals with user addresses. */
 static void force_user_fault(unsigned long address, int write)
 {
@@ -523,21 +406,21 @@ static void force_user_fault(unsigned long address, int write)
 
 	down_read(&mm->mmap_sem);
 	vma = find_vma(mm, address);
-	if(!vma)
+	if (!vma)
 		goto bad_area;
-	if(vma->vm_start <= address)
+	if (vma->vm_start <= address)
 		goto good_area;
-	if(!(vma->vm_flags & VM_GROWSDOWN))
+	if (!(vma->vm_flags & VM_GROWSDOWN))
 		goto bad_area;
-	if(expand_stack(vma, address))
+	if (expand_stack(vma, address))
 		goto bad_area;
 good_area:
 	code = SEGV_ACCERR;
-	if(write) {
-		if(!(vma->vm_flags & VM_WRITE))
+	if (write) {
+		if (!(vma->vm_flags & VM_WRITE))
 			goto bad_area;
 	} else {
-		if(!(vma->vm_flags & (VM_READ | VM_EXEC)))
+		if (!(vma->vm_flags & (VM_READ | VM_EXEC)))
 			goto bad_area;
 	}
 	switch (handle_mm_fault(mm, vma, address, write ? FAULT_FLAG_WRITE : 0)) {
@@ -568,7 +451,7 @@ void window_overflow_fault(void)
 	unsigned long sp;
 
 	sp = current_thread_info()->rwbuf_stkptrs[0];
-	if(((sp + 0x38) & PAGE_MASK) != (sp & PAGE_MASK))
+	if (((sp + 0x38) & PAGE_MASK) != (sp & PAGE_MASK))
 		force_user_fault(sp + 0x38, 1);
 	force_user_fault(sp, 1);
 
@@ -577,7 +460,7 @@ void window_overflow_fault(void)
 
 void window_underflow_fault(unsigned long sp)
 {
-	if(((sp + 0x38) & PAGE_MASK) != (sp & PAGE_MASK))
+	if (((sp + 0x38) & PAGE_MASK) != (sp & PAGE_MASK))
 		force_user_fault(sp + 0x38, 0);
 	force_user_fault(sp, 0);
 
@@ -589,7 +472,7 @@ void window_ret_fault(struct pt_regs *regs)
 	unsigned long sp;
 
 	sp = regs->u_regs[UREG_FP];
-	if(((sp + 0x38) & PAGE_MASK) != (sp & PAGE_MASK))
+	if (((sp + 0x38) & PAGE_MASK) != (sp & PAGE_MASK))
 		force_user_fault(sp + 0x38, 0);
 	force_user_fault(sp, 0);
 
diff --git a/arch/sparc/mm/init_32.c b/arch/sparc/mm/init_32.c
index c5f9021b1a01..ef5c779ec855 100644
--- a/arch/sparc/mm/init_32.c
+++ b/arch/sparc/mm/init_32.c
@@ -27,7 +27,6 @@
 #include <linux/gfp.h>
 
 #include <asm/sections.h>
-#include <asm/vac-ops.h>
 #include <asm/page.h>
 #include <asm/pgtable.h>
 #include <asm/vaddrs.h>
@@ -45,9 +44,6 @@ EXPORT_SYMBOL(phys_base);
 unsigned long pfn_base;
 EXPORT_SYMBOL(pfn_base);
 
-unsigned long page_kernel;
-EXPORT_SYMBOL(page_kernel);
-
 struct sparc_phys_banks sp_banks[SPARC_PHYS_BANKS+1];
 unsigned long sparc_unmapped_base;
 
@@ -287,44 +283,16 @@ unsigned long __init bootmem_init(unsigned long *pages_avail)
 }
 
 /*
- * check_pgt_cache
- *
- * This is called at the end of unmapping of VMA (zap_page_range),
- * to rescan the page cache for architecture specific things,
- * presumably something like sun4/sun4c PMEGs. Most architectures
- * define check_pgt_cache empty.
- *
- * We simply copy the 2.4 implementation for now.
- */
-static int pgt_cache_water[2] = { 25, 50 };
-
-void check_pgt_cache(void)
-{
-	do_check_pgt_cache(pgt_cache_water[0], pgt_cache_water[1]);
-}
-
-/*
  * paging_init() sets up the page tables: We call the MMU specific
  * init routine based upon the Sun model type on the Sparc.
  *
  */
-extern void sun4c_paging_init(void);
 extern void srmmu_paging_init(void);
 extern void device_scan(void);
 
-pgprot_t PAGE_SHARED __read_mostly;
-EXPORT_SYMBOL(PAGE_SHARED);
-
 void __init paging_init(void)
 {
 	switch(sparc_cpu_model) {
-	case sun4c:
-	case sun4e:
-	case sun4:
-		sun4c_paging_init();
-		sparc_unmapped_base = 0xe0000000;
-		BTFIXUPSET_SETHI(sparc_unmapped_base, 0xe0000000);
-		break;
 	case sparc_leon:
 		leon_init();
 		/* fall through */
@@ -332,7 +300,6 @@ void __init paging_init(void)
 	case sun4d:
 		srmmu_paging_init();
 		sparc_unmapped_base = 0x50000000;
-		BTFIXUPSET_SETHI(sparc_unmapped_base, 0x50000000);
 		break;
 	default:
 		prom_printf("paging_init: Cannot init paging on this Sparc\n");
@@ -341,24 +308,6 @@ void __init paging_init(void)
 		prom_halt();
 	}
 
-	/* Initialize the protection map with non-constant, MMU dependent values. */
-	protection_map[0] = PAGE_NONE;
-	protection_map[1] = PAGE_READONLY;
-	protection_map[2] = PAGE_COPY;
-	protection_map[3] = PAGE_COPY;
-	protection_map[4] = PAGE_READONLY;
-	protection_map[5] = PAGE_READONLY;
-	protection_map[6] = PAGE_COPY;
-	protection_map[7] = PAGE_COPY;
-	protection_map[8] = PAGE_NONE;
-	protection_map[9] = PAGE_READONLY;
-	protection_map[10] = PAGE_SHARED;
-	protection_map[11] = PAGE_SHARED;
-	protection_map[12] = PAGE_READONLY;
-	protection_map[13] = PAGE_READONLY;
-	protection_map[14] = PAGE_SHARED;
-	protection_map[15] = PAGE_SHARED;
-	btfixup();
 	prom_build_devicetree();
 	of_fill_in_cpu_data();
 	device_scan();
diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index 21faaeea85de..6026fdd1b2ed 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -741,7 +741,6 @@ static void __init find_ramdisk(unsigned long phys_base)
 struct node_mem_mask {
 	unsigned long mask;
 	unsigned long val;
-	unsigned long bootmem_paddr;
 };
 static struct node_mem_mask node_masks[MAX_NUMNODES];
 static int num_node_masks;
@@ -806,12 +805,6 @@ static u64 memblock_nid_range(u64 start, u64 end, int *nid)
 
 	return start;
 }
-#else
-static u64 memblock_nid_range(u64 start, u64 end, int *nid)
-{
-	*nid = 0;
-	return end;
-}
 #endif
 
 /* This must be invoked after performing all of the necessary
@@ -820,10 +813,11 @@ static u64 memblock_nid_range(u64 start, u64 end, int *nid)
  */
 static void __init allocate_node_data(int nid)
 {
-	unsigned long paddr, num_pages, start_pfn, end_pfn;
 	struct pglist_data *p;
-
+	unsigned long start_pfn, end_pfn;
 #ifdef CONFIG_NEED_MULTIPLE_NODES
+	unsigned long paddr;
+
 	paddr = memblock_alloc_try_nid(sizeof(struct pglist_data), SMP_CACHE_BYTES, nid);
 	if (!paddr) {
 		prom_printf("Cannot allocate pglist_data for nid[%d]\n", nid);
@@ -832,7 +826,7 @@ static void __init allocate_node_data(int nid)
 	NODE_DATA(nid) = __va(paddr);
 	memset(NODE_DATA(nid), 0, sizeof(struct pglist_data));
 
-	NODE_DATA(nid)->bdata = &bootmem_node_data[nid];
+	NODE_DATA(nid)->node_id = nid;
 #endif
 
 	p = NODE_DATA(nid);
@@ -840,18 +834,6 @@ static void __init allocate_node_data(int nid)
 	get_pfn_range_for_nid(nid, &start_pfn, &end_pfn);
 	p->node_start_pfn = start_pfn;
 	p->node_spanned_pages = end_pfn - start_pfn;
-
-	if (p->node_spanned_pages) {
-		num_pages = bootmem_bootmap_pages(p->node_spanned_pages);
-
-		paddr = memblock_alloc_try_nid(num_pages << PAGE_SHIFT, PAGE_SIZE, nid);
-		if (!paddr) {
-			prom_printf("Cannot allocate bootmap for nid[%d]\n",
-				  nid);
-			prom_halt();
-		}
-		node_masks[nid].bootmem_paddr = paddr;
-	}
 }
 
 static void init_node_masks_nonnuma(void)
@@ -1292,75 +1274,9 @@ static void __init bootmem_init_nonnuma(void)
 	node_set_online(0);
 }
 
-static void __init reserve_range_in_node(int nid, unsigned long start,
-					 unsigned long end)
-{
-	numadbg("    reserve_range_in_node(nid[%d],start[%lx],end[%lx]\n",
-		nid, start, end);
-	while (start < end) {
-		unsigned long this_end;
-		int n;
-
-		this_end = memblock_nid_range(start, end, &n);
-		if (n == nid) {
-			numadbg("      MATCH reserving range [%lx:%lx]\n",
-				start, this_end);
-			reserve_bootmem_node(NODE_DATA(nid), start,
-					     (this_end - start), BOOTMEM_DEFAULT);
-		} else
-			numadbg("      NO MATCH, advancing start to %lx\n",
-				this_end);
-
-		start = this_end;
-	}
-}
-
-static void __init trim_reserved_in_node(int nid)
-{
-	struct memblock_region *reg;
-
-	numadbg("  trim_reserved_in_node(%d)\n", nid);
-
-	for_each_memblock(reserved, reg)
-		reserve_range_in_node(nid, reg->base, reg->base + reg->size);
-}
-
-static void __init bootmem_init_one_node(int nid)
-{
-	struct pglist_data *p;
-
-	numadbg("bootmem_init_one_node(%d)\n", nid);
-
-	p = NODE_DATA(nid);
-
-	if (p->node_spanned_pages) {
-		unsigned long paddr = node_masks[nid].bootmem_paddr;
-		unsigned long end_pfn;
-
-		end_pfn = p->node_start_pfn + p->node_spanned_pages;
-
-		numadbg("  init_bootmem_node(%d, %lx, %lx, %lx)\n",
-			nid, paddr >> PAGE_SHIFT, p->node_start_pfn, end_pfn);
-
-		init_bootmem_node(p, paddr >> PAGE_SHIFT,
-				  p->node_start_pfn, end_pfn);
-
-		numadbg("  free_bootmem_with_active_regions(%d, %lx)\n",
-			nid, end_pfn);
-		free_bootmem_with_active_regions(nid, end_pfn);
-
-		trim_reserved_in_node(nid);
-
-		numadbg("  sparse_memory_present_with_active_regions(%d)\n",
-			nid);
-		sparse_memory_present_with_active_regions(nid);
-	}
-}
-
 static unsigned long __init bootmem_init(unsigned long phys_base)
 {
 	unsigned long end_pfn;
-	int nid;
 
 	end_pfn = memblock_end_of_DRAM() >> PAGE_SHIFT;
 	max_pfn = max_low_pfn = end_pfn;
@@ -1369,11 +1285,12 @@ static unsigned long __init bootmem_init(unsigned long phys_base)
 	if (bootmem_init_numa() < 0)
 		bootmem_init_nonnuma();
 
-	/* XXX cpu notifier XXX */
+	/* Dump memblock with node info. */
+	memblock_dump_all();
 
-	for_each_online_node(nid)
-		bootmem_init_one_node(nid);
+	/* XXX cpu notifier XXX */
 
+	sparse_memory_present_with_active_regions(MAX_NUMNODES);
 	sparse_init();
 
 	return end_pfn;
@@ -1701,6 +1618,7 @@ void __init paging_init(void)
 {
 	unsigned long end_pfn, shift, phys_base;
 	unsigned long real_end, i;
+	int node;
 
 	/* These build time checkes make sure that the dcache_dirty_cpu()
 	 * page->flags usage will work.
@@ -1826,22 +1744,24 @@ void __init paging_init(void)
 #endif
 	}
 
+	/* Setup bootmem... */
+	last_valid_pfn = end_pfn = bootmem_init(phys_base);
+
 	/* Once the OF device tree and MDESC have been setup, we know
 	 * the list of possible cpus.  Therefore we can allocate the
 	 * IRQ stacks.
 	 */
 	for_each_possible_cpu(i) {
-		/* XXX Use node local allocations... XXX */
-		softirq_stack[i] = __va(memblock_alloc(THREAD_SIZE, THREAD_SIZE));
-		hardirq_stack[i] = __va(memblock_alloc(THREAD_SIZE, THREAD_SIZE));
-	}
+		node = cpu_to_node(i);
 
-	/* Setup bootmem... */
-	last_valid_pfn = end_pfn = bootmem_init(phys_base);
+		softirq_stack[i] = __alloc_bootmem_node(NODE_DATA(node),
+							THREAD_SIZE,
+							THREAD_SIZE, 0);
+		hardirq_stack[i] = __alloc_bootmem_node(NODE_DATA(node),
+							THREAD_SIZE,
+							THREAD_SIZE, 0);
+	}
 
-#ifndef CONFIG_NEED_MULTIPLE_NODES
-	max_mapnr = last_valid_pfn;
-#endif
 	kernel_physical_mapping_init();
 
 	{
@@ -1973,6 +1893,7 @@ void __init mem_init(void)
 					free_all_bootmem_node(NODE_DATA(i));
 			}
 		}
+		totalram_pages += free_low_memory_core_early(MAX_NUMNODES);
 	}
 #else
 	totalram_pages = free_all_bootmem();
diff --git a/arch/sparc/mm/io-unit.c b/arch/sparc/mm/io-unit.c
index fc58c3e917df..eb99862e9654 100644
--- a/arch/sparc/mm/io-unit.c
+++ b/arch/sparc/mm/io-unit.c
@@ -197,7 +197,7 @@ static void iounit_release_scsi_sgl(struct device *dev, struct scatterlist *sg,
 }
 
 #ifdef CONFIG_SBUS
-static int iounit_map_dma_area(struct device *dev, dma_addr_t *pba, unsigned long va, __u32 addr, int len)
+static int iounit_map_dma_area(struct device *dev, dma_addr_t *pba, unsigned long va, unsigned long addr, int len)
 {
 	struct iounit_struct *iounit = dev->archdata.iommu;
 	unsigned long page, end;
@@ -242,29 +242,18 @@ static void iounit_unmap_dma_area(struct device *dev, unsigned long addr, int le
 }
 #endif
 
-static char *iounit_lockarea(char *vaddr, unsigned long len)
-{
-/* FIXME: Write this */
-	return vaddr;
-}
-
-static void iounit_unlockarea(char *vaddr, unsigned long len)
-{
-/* FIXME: Write this */
-}
+static const struct sparc32_dma_ops iounit_dma_ops = {
+	.get_scsi_one		= iounit_get_scsi_one,
+	.get_scsi_sgl		= iounit_get_scsi_sgl,
+	.release_scsi_one	= iounit_release_scsi_one,
+	.release_scsi_sgl	= iounit_release_scsi_sgl,
+#ifdef CONFIG_SBUS
+	.map_dma_area		= iounit_map_dma_area,
+	.unmap_dma_area		= iounit_unmap_dma_area,
+#endif
+};
 
 void __init ld_mmu_iounit(void)
 {
-	BTFIXUPSET_CALL(mmu_lockarea, iounit_lockarea, BTFIXUPCALL_RETO0);
-	BTFIXUPSET_CALL(mmu_unlockarea, iounit_unlockarea, BTFIXUPCALL_NOP);
-
-	BTFIXUPSET_CALL(mmu_get_scsi_one, iounit_get_scsi_one, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(mmu_get_scsi_sgl, iounit_get_scsi_sgl, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(mmu_release_scsi_one, iounit_release_scsi_one, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(mmu_release_scsi_sgl, iounit_release_scsi_sgl, BTFIXUPCALL_NORM);
-
-#ifdef CONFIG_SBUS
-	BTFIXUPSET_CALL(mmu_map_dma_area, iounit_map_dma_area, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(mmu_unmap_dma_area, iounit_unmap_dma_area, BTFIXUPCALL_NORM);
-#endif
+	sparc32_dma_ops = &iounit_dma_ops;
 }
diff --git a/arch/sparc/mm/iommu.c b/arch/sparc/mm/iommu.c
index 07fc6a65d9b6..a8a58cad9d2b 100644
--- a/arch/sparc/mm/iommu.c
+++ b/arch/sparc/mm/iommu.c
@@ -39,8 +39,6 @@
 
 /* srmmu.c */
 extern int viking_mxcc_present;
-BTFIXUPDEF_CALL(void, flush_page_for_dma, unsigned long)
-#define flush_page_for_dma(page) BTFIXUP_CALL(flush_page_for_dma)(page)
 extern int flush_page_for_dma_global;
 static int viking_flush;
 /* viking.S */
@@ -143,7 +141,6 @@ static int __init iommu_init(void)
 
 subsys_initcall(iommu_init);
 
-/* This begs to be btfixup-ed by srmmu. */
 /* Flush the iotlb entries to ram. */
 /* This could be better if we didn't have to flush whole pages. */
 static void iommu_flush_iotlb(iopte_t *iopte, unsigned int niopte)
@@ -216,11 +213,6 @@ static u32 iommu_get_scsi_one(struct device *dev, char *vaddr, unsigned int len)
 	return busa + off;
 }
 
-static __u32 iommu_get_scsi_one_noflush(struct device *dev, char *vaddr, unsigned long len)
-{
-	return iommu_get_scsi_one(dev, vaddr, len);
-}
-
 static __u32 iommu_get_scsi_one_gflush(struct device *dev, char *vaddr, unsigned long len)
 {
 	flush_page_for_dma(0);
@@ -238,19 +230,6 @@ static __u32 iommu_get_scsi_one_pflush(struct device *dev, char *vaddr, unsigned
 	return iommu_get_scsi_one(dev, vaddr, len);
 }
 
-static void iommu_get_scsi_sgl_noflush(struct device *dev, struct scatterlist *sg, int sz)
-{
-	int n;
-
-	while (sz != 0) {
-		--sz;
-		n = (sg->length + sg->offset + PAGE_SIZE-1) >> PAGE_SHIFT;
-		sg->dma_address = iommu_get_one(dev, sg_page(sg), n) + sg->offset;
-		sg->dma_length = sg->length;
-		sg = sg_next(sg);
-	}
-}
-
 static void iommu_get_scsi_sgl_gflush(struct device *dev, struct scatterlist *sg, int sz)
 {
 	int n;
@@ -426,40 +405,36 @@ static void iommu_unmap_dma_area(struct device *dev, unsigned long busa, int len
 }
 #endif
 
-static char *iommu_lockarea(char *vaddr, unsigned long len)
-{
-	return vaddr;
-}
+static const struct sparc32_dma_ops iommu_dma_gflush_ops = {
+	.get_scsi_one		= iommu_get_scsi_one_gflush,
+	.get_scsi_sgl		= iommu_get_scsi_sgl_gflush,
+	.release_scsi_one	= iommu_release_scsi_one,
+	.release_scsi_sgl	= iommu_release_scsi_sgl,
+#ifdef CONFIG_SBUS
+	.map_dma_area		= iommu_map_dma_area,
+	.unmap_dma_area		= iommu_unmap_dma_area,
+#endif
+};
 
-static void iommu_unlockarea(char *vaddr, unsigned long len)
-{
-}
+static const struct sparc32_dma_ops iommu_dma_pflush_ops = {
+	.get_scsi_one		= iommu_get_scsi_one_pflush,
+	.get_scsi_sgl		= iommu_get_scsi_sgl_pflush,
+	.release_scsi_one	= iommu_release_scsi_one,
+	.release_scsi_sgl	= iommu_release_scsi_sgl,
+#ifdef CONFIG_SBUS
+	.map_dma_area		= iommu_map_dma_area,
+	.unmap_dma_area		= iommu_unmap_dma_area,
+#endif
+};
 
 void __init ld_mmu_iommu(void)
 {
-	viking_flush = (BTFIXUPVAL_CALL(flush_page_for_dma) == (unsigned long)viking_flush_page);
-	BTFIXUPSET_CALL(mmu_lockarea, iommu_lockarea, BTFIXUPCALL_RETO0);
-	BTFIXUPSET_CALL(mmu_unlockarea, iommu_unlockarea, BTFIXUPCALL_NOP);
-
-	if (!BTFIXUPVAL_CALL(flush_page_for_dma)) {
-		/* IO coherent chip */
-		BTFIXUPSET_CALL(mmu_get_scsi_one, iommu_get_scsi_one_noflush, BTFIXUPCALL_RETO0);
-		BTFIXUPSET_CALL(mmu_get_scsi_sgl, iommu_get_scsi_sgl_noflush, BTFIXUPCALL_NORM);
-	} else if (flush_page_for_dma_global) {
+	if (flush_page_for_dma_global) {
 		/* flush_page_for_dma flushes everything, no matter of what page is it */
-		BTFIXUPSET_CALL(mmu_get_scsi_one, iommu_get_scsi_one_gflush, BTFIXUPCALL_NORM);
-		BTFIXUPSET_CALL(mmu_get_scsi_sgl, iommu_get_scsi_sgl_gflush, BTFIXUPCALL_NORM);
+		sparc32_dma_ops = &iommu_dma_gflush_ops;
 	} else {
-		BTFIXUPSET_CALL(mmu_get_scsi_one, iommu_get_scsi_one_pflush, BTFIXUPCALL_NORM);
-		BTFIXUPSET_CALL(mmu_get_scsi_sgl, iommu_get_scsi_sgl_pflush, BTFIXUPCALL_NORM);
+		sparc32_dma_ops = &iommu_dma_pflush_ops;
 	}
-	BTFIXUPSET_CALL(mmu_release_scsi_one, iommu_release_scsi_one, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(mmu_release_scsi_sgl, iommu_release_scsi_sgl, BTFIXUPCALL_NORM);
-
-#ifdef CONFIG_SBUS
-	BTFIXUPSET_CALL(mmu_map_dma_area, iommu_map_dma_area, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(mmu_unmap_dma_area, iommu_unmap_dma_area, BTFIXUPCALL_NORM);
-#endif
 
 	if (viking_mxcc_present || srmmu_modtype == HyperSparc) {
 		dvma_prot = __pgprot(SRMMU_CACHE | SRMMU_ET_PTE | SRMMU_PRIV);
diff --git a/arch/sparc/mm/leon_mm.c b/arch/sparc/mm/leon_mm.c
index 13c2169822a8..4c67ae6e5023 100644
--- a/arch/sparc/mm/leon_mm.c
+++ b/arch/sparc/mm/leon_mm.c
@@ -15,9 +15,23 @@
 #include <asm/leon.h>
 #include <asm/tlbflush.h>
 
+#include "srmmu.h"
+
 int leon_flush_during_switch = 1;
 int srmmu_swprobe_trace;
 
+static inline unsigned long leon_get_ctable_ptr(void)
+{
+	unsigned int retval;
+
+	__asm__ __volatile__("lda [%1] %2, %0\n\t" :
+			     "=r" (retval) :
+			     "r" (SRMMU_CTXTBL_PTR),
+			     "i" (ASI_LEON_MMUREGS));
+	return (retval & SRMMU_CTX_PMASK) << 4;
+}
+
+
 unsigned long srmmu_swprobe(unsigned long vaddr, unsigned long *paddr)
 {
 
@@ -33,10 +47,10 @@ unsigned long srmmu_swprobe(unsigned long vaddr, unsigned long *paddr)
 	if (srmmu_swprobe_trace)
 		printk(KERN_INFO "swprobe: trace on\n");
 
-	ctxtbl = srmmu_get_ctable_ptr();
+	ctxtbl = leon_get_ctable_ptr();
 	if (!(ctxtbl)) {
 		if (srmmu_swprobe_trace)
-			printk(KERN_INFO "swprobe: srmmu_get_ctable_ptr returned 0=>0\n");
+			printk(KERN_INFO "swprobe: leon_get_ctable_ptr returned 0=>0\n");
 		return 0;
 	}
 	if (!_pfn_valid(PFN(ctxtbl))) {
@@ -258,3 +272,80 @@ void leon_switch_mm(void)
 	if (leon_flush_during_switch)
 		leon_flush_cache_all();
 }
+
+static void leon_flush_cache_mm(struct mm_struct *mm)
+{
+	leon_flush_cache_all();
+}
+
+static void leon_flush_cache_page(struct vm_area_struct *vma, unsigned long page)
+{
+	leon_flush_pcache_all(vma, page);
+}
+
+static void leon_flush_cache_range(struct vm_area_struct *vma,
+				   unsigned long start,
+				   unsigned long end)
+{
+	leon_flush_cache_all();
+}
+
+static void leon_flush_tlb_mm(struct mm_struct *mm)
+{
+	leon_flush_tlb_all();
+}
+
+static void leon_flush_tlb_page(struct vm_area_struct *vma,
+				unsigned long page)
+{
+	leon_flush_tlb_all();
+}
+
+static void leon_flush_tlb_range(struct vm_area_struct *vma,
+				 unsigned long start,
+				 unsigned long end)
+{
+	leon_flush_tlb_all();
+}
+
+static void leon_flush_page_to_ram(unsigned long page)
+{
+	leon_flush_cache_all();
+}
+
+static void leon_flush_sig_insns(struct mm_struct *mm, unsigned long page)
+{
+	leon_flush_cache_all();
+}
+
+static void leon_flush_page_for_dma(unsigned long page)
+{
+	leon_flush_dcache_all();
+}
+
+void __init poke_leonsparc(void)
+{
+}
+
+static const struct sparc32_cachetlb_ops leon_ops = {
+	.cache_all	= leon_flush_cache_all,
+	.cache_mm	= leon_flush_cache_mm,
+	.cache_page	= leon_flush_cache_page,
+	.cache_range	= leon_flush_cache_range,
+	.tlb_all	= leon_flush_tlb_all,
+	.tlb_mm		= leon_flush_tlb_mm,
+	.tlb_page	= leon_flush_tlb_page,
+	.tlb_range	= leon_flush_tlb_range,
+	.page_to_ram	= leon_flush_page_to_ram,
+	.sig_insns	= leon_flush_sig_insns,
+	.page_for_dma	= leon_flush_page_for_dma,
+};
+
+void __init init_leon(void)
+{
+	srmmu_name = "LEON";
+	sparc32_cachetlb_ops = &leon_ops;
+	poke_srmmu = poke_leonsparc;
+
+	leon_flush_during_switch = leon_flush_needed();
+}
diff --git a/arch/sparc/mm/loadmmu.c b/arch/sparc/mm/loadmmu.c
deleted file mode 100644
index c5bf2a6c3858..000000000000
--- a/arch/sparc/mm/loadmmu.c
+++ /dev/null
@@ -1,43 +0,0 @@
-/*
- * loadmmu.c:  This code loads up all the mm function pointers once the
- *             machine type has been determined.  It also sets the static
- *             mmu values such as PAGE_NONE, etc.
- *
- * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
- * Copyright (C) 1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
- */
-
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/init.h>
-
-#include <asm/page.h>
-#include <asm/pgtable.h>
-#include <asm/mmu_context.h>
-#include <asm/oplib.h>
-
-struct ctx_list *ctx_list_pool;
-struct ctx_list ctx_free;
-struct ctx_list ctx_used;
-
-extern void ld_mmu_sun4c(void);
-extern void ld_mmu_srmmu(void);
-
-void __init load_mmu(void)
-{
-	switch(sparc_cpu_model) {
-	case sun4c:
-	case sun4:
-		ld_mmu_sun4c();
-		break;
-	case sun4m:
-	case sun4d:
-	case sparc_leon:
-		ld_mmu_srmmu();
-		break;
-	default:
-		prom_printf("load_mmu: %d unsupported\n", (int)sparc_cpu_model);
-		prom_halt();
-	}
-	btfixup();
-}
diff --git a/arch/sparc/mm/nosun4c.c b/arch/sparc/mm/nosun4c.c
deleted file mode 100644
index 4e62c27147c4..000000000000
--- a/arch/sparc/mm/nosun4c.c
+++ /dev/null
@@ -1,77 +0,0 @@
-/*
- * nosun4c.c: This file is a bunch of dummies for SMP compiles, 
- *         so that it does not need sun4c and avoid ifdefs.
- *
- * Copyright (C) 1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
- */
-
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/init.h>
-#include <asm/pgtable.h>
-
-static char shouldnothappen[] __initdata = "32bit SMP kernel only supports sun4m and sun4d\n";
-
-/* Dummies */
-struct sun4c_mmu_ring {
-	unsigned long xxx1[3];
-	unsigned char xxx2[2];
-	int xxx3;
-};
-struct sun4c_mmu_ring sun4c_kernel_ring;
-struct sun4c_mmu_ring sun4c_kfree_ring;
-unsigned long sun4c_kernel_faults;
-unsigned long *sun4c_memerr_reg;
-
-static void __init should_not_happen(void)
-{
-	prom_printf(shouldnothappen);
-	prom_halt();
-}
-
-unsigned long __init sun4c_paging_init(unsigned long start_mem, unsigned long end_mem)
-{
-	should_not_happen();
-	return 0;
-}
-
-void __init ld_mmu_sun4c(void)
-{
-	should_not_happen();
-}
-
-void sun4c_mapioaddr(unsigned long physaddr, unsigned long virt_addr, int bus_type, int rdonly)
-{
-}
-
-void sun4c_unmapioaddr(unsigned long virt_addr)
-{
-}
-
-void sun4c_complete_all_stores(void)
-{
-}
-
-pte_t *sun4c_pte_offset(pmd_t * dir, unsigned long address)
-{
-	return NULL;
-}
-
-pte_t *sun4c_pte_offset_kernel(pmd_t *dir, unsigned long address)
-{
-	return NULL;
-}
-
-void sun4c_update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t *ptep)
-{
-}
-
-void __init sun4c_probe_vac(void)
-{
-	should_not_happen();
-}
-
-void __init sun4c_probe_memerr_reg(void)
-{
-	should_not_happen();
-}
diff --git a/arch/sparc/mm/srmmu.c b/arch/sparc/mm/srmmu.c
index cbef74e793b8..8e97e0305b01 100644
--- a/arch/sparc/mm/srmmu.c
+++ b/arch/sparc/mm/srmmu.c
@@ -48,39 +48,37 @@
 #include <asm/turbosparc.h>
 #include <asm/leon.h>
 
-#include <asm/btfixup.h>
+#include "srmmu.h"
 
 enum mbus_module srmmu_modtype;
 static unsigned int hwbug_bitmask;
 int vac_cache_size;
 int vac_line_size;
 
+struct ctx_list *ctx_list_pool;
+struct ctx_list ctx_free;
+struct ctx_list ctx_used;
+
 extern struct resource sparc_iomap;
 
 extern unsigned long last_valid_pfn;
 
-extern unsigned long page_kernel;
-
 static pgd_t *srmmu_swapper_pg_dir;
 
+const struct sparc32_cachetlb_ops *sparc32_cachetlb_ops;
+
 #ifdef CONFIG_SMP
+const struct sparc32_cachetlb_ops *local_ops;
+
 #define FLUSH_BEGIN(mm)
 #define FLUSH_END
 #else
-#define FLUSH_BEGIN(mm) if((mm)->context != NO_CONTEXT) {
+#define FLUSH_BEGIN(mm) if ((mm)->context != NO_CONTEXT) {
 #define FLUSH_END	}
 #endif
 
-BTFIXUPDEF_CALL(void, flush_page_for_dma, unsigned long)
-#define flush_page_for_dma(page) BTFIXUP_CALL(flush_page_for_dma)(page)
-
 int flush_page_for_dma_global = 1;
 
-#ifdef CONFIG_SMP
-BTFIXUPDEF_CALL(void, local_flush_page_for_dma, unsigned long)
-#define local_flush_page_for_dma(page) BTFIXUP_CALL(local_flush_page_for_dma)(page)
-#endif
-
 char *srmmu_name;
 
 ctxd_t *srmmu_ctx_table_phys;
@@ -91,28 +89,6 @@ static DEFINE_SPINLOCK(srmmu_context_spinlock);
 
 static int is_hypersparc;
 
-/*
- * In general all page table modifications should use the V8 atomic
- * swap instruction.  This insures the mmu and the cpu are in sync
- * with respect to ref/mod bits in the page tables.
- */
-static inline unsigned long srmmu_swap(unsigned long *addr, unsigned long value)
-{
-	__asm__ __volatile__("swap [%2], %0" : "=&r" (value) : "0" (value), "r" (addr));
-	return value;
-}
-
-static inline void srmmu_set_pte(pte_t *ptep, pte_t pteval)
-{
-	srmmu_swap((unsigned long *)ptep, pte_val(pteval));
-}
-
-/* The very generic SRMMU page table operations. */
-static inline int srmmu_device_memory(unsigned long x)
-{
-	return ((x & 0xF0000000) != 0);
-}
-
 static int srmmu_cache_pagetables;
 
 /* these will be initialized in srmmu_nocache_calcsize() */
@@ -129,145 +105,39 @@ void *srmmu_nocache_pool;
 void *srmmu_nocache_bitmap;
 static struct bit_map srmmu_nocache_map;
 
-static unsigned long srmmu_pte_pfn(pte_t pte)
-{
-	if (srmmu_device_memory(pte_val(pte))) {
-		/* Just return something that will cause
-		 * pfn_valid() to return false.  This makes
-		 * copy_one_pte() to just directly copy to
-		 * PTE over.
-		 */
-		return ~0UL;
-	}
-	return (pte_val(pte) & SRMMU_PTE_PMASK) >> (PAGE_SHIFT-4);
-}
-
-static struct page *srmmu_pmd_page(pmd_t pmd)
-{
-
-	if (srmmu_device_memory(pmd_val(pmd)))
-		BUG();
-	return pfn_to_page((pmd_val(pmd) & SRMMU_PTD_PMASK) >> (PAGE_SHIFT-4));
-}
-
-static inline unsigned long srmmu_pgd_page(pgd_t pgd)
-{ return srmmu_device_memory(pgd_val(pgd))?~0:(unsigned long)__nocache_va((pgd_val(pgd) & SRMMU_PTD_PMASK) << 4); }
-
-
-static inline int srmmu_pte_none(pte_t pte)
-{ return !(pte_val(pte) & 0xFFFFFFF); }
-
-static inline int srmmu_pte_present(pte_t pte)
-{ return ((pte_val(pte) & SRMMU_ET_MASK) == SRMMU_ET_PTE); }
-
-static inline void srmmu_pte_clear(pte_t *ptep)
-{ srmmu_set_pte(ptep, __pte(0)); }
-
 static inline int srmmu_pmd_none(pmd_t pmd)
 { return !(pmd_val(pmd) & 0xFFFFFFF); }
 
-static inline int srmmu_pmd_bad(pmd_t pmd)
-{ return (pmd_val(pmd) & SRMMU_ET_MASK) != SRMMU_ET_PTD; }
-
-static inline int srmmu_pmd_present(pmd_t pmd)
-{ return ((pmd_val(pmd) & SRMMU_ET_MASK) == SRMMU_ET_PTD); }
-
-static inline void srmmu_pmd_clear(pmd_t *pmdp) {
-	int i;
-	for (i = 0; i < PTRS_PER_PTE/SRMMU_REAL_PTRS_PER_PTE; i++)
-		srmmu_set_pte((pte_t *)&pmdp->pmdv[i], __pte(0));
-}
-
-static inline int srmmu_pgd_none(pgd_t pgd)          
-{ return !(pgd_val(pgd) & 0xFFFFFFF); }
-
-static inline int srmmu_pgd_bad(pgd_t pgd)
-{ return (pgd_val(pgd) & SRMMU_ET_MASK) != SRMMU_ET_PTD; }
-
-static inline int srmmu_pgd_present(pgd_t pgd)
-{ return ((pgd_val(pgd) & SRMMU_ET_MASK) == SRMMU_ET_PTD); }
-
-static inline void srmmu_pgd_clear(pgd_t * pgdp)
-{ srmmu_set_pte((pte_t *)pgdp, __pte(0)); }
-
-static inline pte_t srmmu_pte_wrprotect(pte_t pte)
-{ return __pte(pte_val(pte) & ~SRMMU_WRITE);}
-
-static inline pte_t srmmu_pte_mkclean(pte_t pte)
-{ return __pte(pte_val(pte) & ~SRMMU_DIRTY);}
-
-static inline pte_t srmmu_pte_mkold(pte_t pte)
-{ return __pte(pte_val(pte) & ~SRMMU_REF);}
-
-static inline pte_t srmmu_pte_mkwrite(pte_t pte)
-{ return __pte(pte_val(pte) | SRMMU_WRITE);}
-
-static inline pte_t srmmu_pte_mkdirty(pte_t pte)
-{ return __pte(pte_val(pte) | SRMMU_DIRTY);}
-
-static inline pte_t srmmu_pte_mkyoung(pte_t pte)
-{ return __pte(pte_val(pte) | SRMMU_REF);}
-
-/*
- * Conversion functions: convert a page and protection to a page entry,
- * and a page entry and page directory to the page they refer to.
- */
-static pte_t srmmu_mk_pte(struct page *page, pgprot_t pgprot)
-{ return __pte((page_to_pfn(page) << (PAGE_SHIFT-4)) | pgprot_val(pgprot)); }
-
-static pte_t srmmu_mk_pte_phys(unsigned long page, pgprot_t pgprot)
-{ return __pte(((page) >> 4) | pgprot_val(pgprot)); }
-
-static pte_t srmmu_mk_pte_io(unsigned long page, pgprot_t pgprot, int space)
-{ return __pte(((page) >> 4) | (space << 28) | pgprot_val(pgprot)); }
-
 /* XXX should we hyper_flush_whole_icache here - Anton */
 static inline void srmmu_ctxd_set(ctxd_t *ctxp, pgd_t *pgdp)
-{ srmmu_set_pte((pte_t *)ctxp, (SRMMU_ET_PTD | (__nocache_pa((unsigned long) pgdp) >> 4))); }
+{ set_pte((pte_t *)ctxp, (SRMMU_ET_PTD | (__nocache_pa((unsigned long) pgdp) >> 4))); }
 
-static inline void srmmu_pgd_set(pgd_t * pgdp, pmd_t * pmdp)
-{ srmmu_set_pte((pte_t *)pgdp, (SRMMU_ET_PTD | (__nocache_pa((unsigned long) pmdp) >> 4))); }
-
-static void srmmu_pmd_set(pmd_t *pmdp, pte_t *ptep)
+void pmd_set(pmd_t *pmdp, pte_t *ptep)
 {
 	unsigned long ptp;	/* Physical address, shifted right by 4 */
 	int i;
 
 	ptp = __nocache_pa((unsigned long) ptep) >> 4;
 	for (i = 0; i < PTRS_PER_PTE/SRMMU_REAL_PTRS_PER_PTE; i++) {
-		srmmu_set_pte((pte_t *)&pmdp->pmdv[i], SRMMU_ET_PTD | ptp);
+		set_pte((pte_t *)&pmdp->pmdv[i], SRMMU_ET_PTD | ptp);
 		ptp += (SRMMU_REAL_PTRS_PER_PTE*sizeof(pte_t) >> 4);
 	}
 }
 
-static void srmmu_pmd_populate(pmd_t *pmdp, struct page *ptep)
+void pmd_populate(struct mm_struct *mm, pmd_t *pmdp, struct page *ptep)
 {
 	unsigned long ptp;	/* Physical address, shifted right by 4 */
 	int i;
 
 	ptp = page_to_pfn(ptep) << (PAGE_SHIFT-4);	/* watch for overflow */
 	for (i = 0; i < PTRS_PER_PTE/SRMMU_REAL_PTRS_PER_PTE; i++) {
-		srmmu_set_pte((pte_t *)&pmdp->pmdv[i], SRMMU_ET_PTD | ptp);
+		set_pte((pte_t *)&pmdp->pmdv[i], SRMMU_ET_PTD | ptp);
 		ptp += (SRMMU_REAL_PTRS_PER_PTE*sizeof(pte_t) >> 4);
 	}
 }
 
-static inline pte_t srmmu_pte_modify(pte_t pte, pgprot_t newprot)
-{ return __pte((pte_val(pte) & SRMMU_CHG_MASK) | pgprot_val(newprot)); }
-
-/* to find an entry in a top-level page table... */
-static inline pgd_t *srmmu_pgd_offset(struct mm_struct * mm, unsigned long address)
-{ return mm->pgd + (address >> SRMMU_PGDIR_SHIFT); }
-
-/* Find an entry in the second-level page table.. */
-static inline pmd_t *srmmu_pmd_offset(pgd_t * dir, unsigned long address)
-{
-	return (pmd_t *) srmmu_pgd_page(*dir) +
-	    ((address >> PMD_SHIFT) & (PTRS_PER_PMD - 1));
-}
-
 /* Find an entry in the third-level page table.. */ 
-static inline pte_t *srmmu_pte_offset(pmd_t * dir, unsigned long address)
+pte_t *pte_offset_kernel(pmd_t * dir, unsigned long address)
 {
 	void *pte;
 
@@ -276,23 +146,6 @@ static inline pte_t *srmmu_pte_offset(pmd_t * dir, unsigned long address)
 	    ((address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1));
 }
 
-static unsigned long srmmu_swp_type(swp_entry_t entry)
-{
-	return (entry.val >> SRMMU_SWP_TYPE_SHIFT) & SRMMU_SWP_TYPE_MASK;
-}
-
-static unsigned long srmmu_swp_offset(swp_entry_t entry)
-{
-	return (entry.val >> SRMMU_SWP_OFF_SHIFT) & SRMMU_SWP_OFF_MASK;
-}
-
-static swp_entry_t srmmu_swp_entry(unsigned long type, unsigned long offset)
-{
-	return (swp_entry_t) {
-		  (type & SRMMU_SWP_TYPE_MASK) << SRMMU_SWP_TYPE_SHIFT
-		| (offset & SRMMU_SWP_OFF_MASK) << SRMMU_SWP_OFF_SHIFT };
-}
-
 /*
  * size: bytes to allocate in the nocache area.
  * align: bytes, number to align at.
@@ -325,7 +178,7 @@ static unsigned long __srmmu_get_nocache(int size, int align)
 	return (SRMMU_NOCACHE_VADDR + (offset << SRMMU_NOCACHE_BITMAP_SHIFT));
 }
 
-static unsigned long srmmu_get_nocache(int size, int align)
+unsigned long srmmu_get_nocache(int size, int align)
 {
 	unsigned long tmp;
 
@@ -337,7 +190,7 @@ static unsigned long srmmu_get_nocache(int size, int align)
 	return tmp;
 }
 
-static void srmmu_free_nocache(unsigned long vaddr, int size)
+void srmmu_free_nocache(unsigned long vaddr, int size)
 {
 	int offset;
 
@@ -429,15 +282,15 @@ static void __init srmmu_nocache_init(void)
 
 	while (vaddr < srmmu_nocache_end) {
 		pgd = pgd_offset_k(vaddr);
-		pmd = srmmu_pmd_offset(__nocache_fix(pgd), vaddr);
-		pte = srmmu_pte_offset(__nocache_fix(pmd), vaddr);
+		pmd = pmd_offset(__nocache_fix(pgd), vaddr);
+		pte = pte_offset_kernel(__nocache_fix(pmd), vaddr);
 
 		pteval = ((paddr >> 4) | SRMMU_ET_PTE | SRMMU_PRIV);
 
 		if (srmmu_cache_pagetables)
 			pteval |= SRMMU_CACHE;
 
-		srmmu_set_pte(__nocache_fix(pte), __pte(pteval));
+		set_pte(__nocache_fix(pte), __pte(pteval));
 
 		vaddr += PAGE_SIZE;
 		paddr += PAGE_SIZE;
@@ -447,7 +300,7 @@ static void __init srmmu_nocache_init(void)
 	flush_tlb_all();
 }
 
-static inline pgd_t *srmmu_get_pgd_fast(void)
+pgd_t *get_pgd_fast(void)
 {
 	pgd_t *pgd = NULL;
 
@@ -462,21 +315,6 @@ static inline pgd_t *srmmu_get_pgd_fast(void)
 	return pgd;
 }
 
-static void srmmu_free_pgd_fast(pgd_t *pgd)
-{
-	srmmu_free_nocache((unsigned long)pgd, SRMMU_PGD_TABLE_SIZE);
-}
-
-static pmd_t *srmmu_pmd_alloc_one(struct mm_struct *mm, unsigned long address)
-{
-	return (pmd_t *)srmmu_get_nocache(SRMMU_PMD_TABLE_SIZE, SRMMU_PMD_TABLE_SIZE);
-}
-
-static void srmmu_pmd_free(pmd_t * pmd)
-{
-	srmmu_free_nocache((unsigned long)pmd, SRMMU_PMD_TABLE_SIZE);
-}
-
 /*
  * Hardware needs alignment to 256 only, but we align to whole page size
  * to reduce fragmentation problems due to the buddy principle.
@@ -485,31 +323,19 @@ static void srmmu_pmd_free(pmd_t * pmd)
  * Alignments up to the page size are the same for physical and virtual
  * addresses of the nocache area.
  */
-static pte_t *
-srmmu_pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
-{
-	return (pte_t *)srmmu_get_nocache(PTE_SIZE, PTE_SIZE);
-}
-
-static pgtable_t
-srmmu_pte_alloc_one(struct mm_struct *mm, unsigned long address)
+pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address)
 {
 	unsigned long pte;
 	struct page *page;
 
-	if ((pte = (unsigned long)srmmu_pte_alloc_one_kernel(mm, address)) == 0)
+	if ((pte = (unsigned long)pte_alloc_one_kernel(mm, address)) == 0)
 		return NULL;
 	page = pfn_to_page( __nocache_pa(pte) >> PAGE_SHIFT );
 	pgtable_page_ctor(page);
 	return page;
 }
 
-static void srmmu_free_pte_fast(pte_t *pte)
-{
-	srmmu_free_nocache((unsigned long)pte, PTE_SIZE);
-}
-
-static void srmmu_pte_free(pgtable_t pte)
+void pte_free(struct mm_struct *mm, pgtable_t pte)
 {
 	unsigned long p;
 
@@ -560,8 +386,8 @@ static inline void free_context(int context)
 }
 
 
-static void srmmu_switch_mm(struct mm_struct *old_mm, struct mm_struct *mm,
-    struct task_struct *tsk, int cpu)
+void switch_mm(struct mm_struct *old_mm, struct mm_struct *mm,
+	       struct task_struct *tsk)
 {
 	if(mm->context == NO_CONTEXT) {
 		spin_lock(&srmmu_context_spinlock);
@@ -590,8 +416,8 @@ static inline void srmmu_mapioaddr(unsigned long physaddr,
 
 	physaddr &= PAGE_MASK;
 	pgdp = pgd_offset_k(virt_addr);
-	pmdp = srmmu_pmd_offset(pgdp, virt_addr);
-	ptep = srmmu_pte_offset(pmdp, virt_addr);
+	pmdp = pmd_offset(pgdp, virt_addr);
+	ptep = pte_offset_kernel(pmdp, virt_addr);
 	tmp = (physaddr >> 4) | SRMMU_ET_PTE;
 
 	/*
@@ -602,11 +428,11 @@ static inline void srmmu_mapioaddr(unsigned long physaddr,
 	tmp |= (bus_type << 28);
 	tmp |= SRMMU_PRIV;
 	__flush_page_to_ram(virt_addr);
-	srmmu_set_pte(ptep, __pte(tmp));
+	set_pte(ptep, __pte(tmp));
 }
 
-static void srmmu_mapiorange(unsigned int bus, unsigned long xpa,
-    unsigned long xva, unsigned int len)
+void srmmu_mapiorange(unsigned int bus, unsigned long xpa,
+		      unsigned long xva, unsigned int len)
 {
 	while (len != 0) {
 		len -= PAGE_SIZE;
@@ -624,14 +450,14 @@ static inline void srmmu_unmapioaddr(unsigned long virt_addr)
 	pte_t *ptep;
 
 	pgdp = pgd_offset_k(virt_addr);
-	pmdp = srmmu_pmd_offset(pgdp, virt_addr);
-	ptep = srmmu_pte_offset(pmdp, virt_addr);
+	pmdp = pmd_offset(pgdp, virt_addr);
+	ptep = pte_offset_kernel(pmdp, virt_addr);
 
 	/* No need to flush uncacheable page. */
-	srmmu_pte_clear(ptep);
+	__pte_clear(ptep);
 }
 
-static void srmmu_unmapiorange(unsigned long virt_addr, unsigned int len)
+void srmmu_unmapiorange(unsigned long virt_addr, unsigned int len)
 {
 	while (len != 0) {
 		len -= PAGE_SIZE;
@@ -647,10 +473,9 @@ static void srmmu_unmapiorange(unsigned long virt_addr, unsigned int len)
  * pool.  As a side effect we are putting a little too much pressure
  * on the gfp() subsystem.  This setup also makes the logic of the
  * iommu mapping code a lot easier as we can transparently handle
- * mappings on the kernel stack without any special code as we did
- * need on the sun4c.
+ * mappings on the kernel stack without any special code.
  */
-static struct thread_info *srmmu_alloc_thread_info_node(int node)
+struct thread_info *alloc_thread_info_node(struct task_struct *tsk, int node)
 {
 	struct thread_info *ret;
 
@@ -664,7 +489,7 @@ static struct thread_info *srmmu_alloc_thread_info_node(int node)
 	return ret;
 }
 
-static void srmmu_free_thread_info(struct thread_info *ti)
+void free_thread_info(struct thread_info *ti)
 {
 	free_pages((unsigned long)ti, THREAD_INFO_ORDER);
 }
@@ -683,38 +508,6 @@ extern void tsunami_flush_tlb_range(struct vm_area_struct *vma, unsigned long st
 extern void tsunami_flush_tlb_page(struct vm_area_struct *vma, unsigned long page);
 extern void tsunami_setup_blockops(void);
 
-/*
- * Workaround, until we find what's going on with Swift. When low on memory,
- * it sometimes loops in fault/handle_mm_fault incl. flush_tlb_page to find
- * out it is already in page tables/ fault again on the same instruction.
- * I really don't understand it, have checked it and contexts
- * are right, flush_tlb_all is done as well, and it faults again...
- * Strange. -jj
- *
- * The following code is a deadwood that may be necessary when
- * we start to make precise page flushes again. --zaitcev
- */
-static void swift_update_mmu_cache(struct vm_area_struct * vma, unsigned long address, pte_t *ptep)
-{
-#if 0
-	static unsigned long last;
-	unsigned int val;
-	/* unsigned int n; */
-
-	if (address == last) {
-		val = srmmu_hwprobe(address);
-		if (val != 0 && pte_val(*ptep) != val) {
-			printk("swift_update_mmu_cache: "
-			    "addr %lx put %08x probed %08x from %p\n",
-			    address, pte_val(*ptep), val,
-			    __builtin_return_address(0));
-			srmmu_flush_whole_tlb();
-		}
-	}
-	last = address;
-#endif
-}
-
 /* swift.S */
 extern void swift_flush_cache_all(void);
 extern void swift_flush_cache_mm(struct mm_struct *mm);
@@ -767,244 +560,6 @@ void swift_flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
  * with respect to cache coherency.
  */
 
-/* Cypress flushes. */
-static void cypress_flush_cache_all(void)
-{
-	volatile unsigned long cypress_sucks;
-	unsigned long faddr, tagval;
-
-	flush_user_windows();
-	for(faddr = 0; faddr < 0x10000; faddr += 0x20) {
-		__asm__ __volatile__("lda [%1 + %2] %3, %0\n\t" :
-				     "=r" (tagval) :
-				     "r" (faddr), "r" (0x40000),
-				     "i" (ASI_M_DATAC_TAG));
-
-		/* If modified and valid, kick it. */
-		if((tagval & 0x60) == 0x60)
-			cypress_sucks = *(unsigned long *)(0xf0020000 + faddr);
-	}
-}
-
-static void cypress_flush_cache_mm(struct mm_struct *mm)
-{
-	register unsigned long a, b, c, d, e, f, g;
-	unsigned long flags, faddr;
-	int octx;
-
-	FLUSH_BEGIN(mm)
-	flush_user_windows();
-	local_irq_save(flags);
-	octx = srmmu_get_context();
-	srmmu_set_context(mm->context);
-	a = 0x20; b = 0x40; c = 0x60;
-	d = 0x80; e = 0xa0; f = 0xc0; g = 0xe0;
-
-	faddr = (0x10000 - 0x100);
-	goto inside;
-	do {
-		faddr -= 0x100;
-	inside:
-		__asm__ __volatile__("sta %%g0, [%0] %1\n\t"
-				     "sta %%g0, [%0 + %2] %1\n\t"
-				     "sta %%g0, [%0 + %3] %1\n\t"
-				     "sta %%g0, [%0 + %4] %1\n\t"
-				     "sta %%g0, [%0 + %5] %1\n\t"
-				     "sta %%g0, [%0 + %6] %1\n\t"
-				     "sta %%g0, [%0 + %7] %1\n\t"
-				     "sta %%g0, [%0 + %8] %1\n\t" : :
-				     "r" (faddr), "i" (ASI_M_FLUSH_CTX),
-				     "r" (a), "r" (b), "r" (c), "r" (d),
-				     "r" (e), "r" (f), "r" (g));
-	} while(faddr);
-	srmmu_set_context(octx);
-	local_irq_restore(flags);
-	FLUSH_END
-}
-
-static void cypress_flush_cache_range(struct vm_area_struct *vma, unsigned long start, unsigned long end)
-{
-	struct mm_struct *mm = vma->vm_mm;
-	register unsigned long a, b, c, d, e, f, g;
-	unsigned long flags, faddr;
-	int octx;
-
-	FLUSH_BEGIN(mm)
-	flush_user_windows();
-	local_irq_save(flags);
-	octx = srmmu_get_context();
-	srmmu_set_context(mm->context);
-	a = 0x20; b = 0x40; c = 0x60;
-	d = 0x80; e = 0xa0; f = 0xc0; g = 0xe0;
-
-	start &= SRMMU_REAL_PMD_MASK;
-	while(start < end) {
-		faddr = (start + (0x10000 - 0x100));
-		goto inside;
-		do {
-			faddr -= 0x100;
-		inside:
-			__asm__ __volatile__("sta %%g0, [%0] %1\n\t"
-					     "sta %%g0, [%0 + %2] %1\n\t"
-					     "sta %%g0, [%0 + %3] %1\n\t"
-					     "sta %%g0, [%0 + %4] %1\n\t"
-					     "sta %%g0, [%0 + %5] %1\n\t"
-					     "sta %%g0, [%0 + %6] %1\n\t"
-					     "sta %%g0, [%0 + %7] %1\n\t"
-					     "sta %%g0, [%0 + %8] %1\n\t" : :
-					     "r" (faddr),
-					     "i" (ASI_M_FLUSH_SEG),
-					     "r" (a), "r" (b), "r" (c), "r" (d),
-					     "r" (e), "r" (f), "r" (g));
-		} while (faddr != start);
-		start += SRMMU_REAL_PMD_SIZE;
-	}
-	srmmu_set_context(octx);
-	local_irq_restore(flags);
-	FLUSH_END
-}
-
-static void cypress_flush_cache_page(struct vm_area_struct *vma, unsigned long page)
-{
-	register unsigned long a, b, c, d, e, f, g;
-	struct mm_struct *mm = vma->vm_mm;
-	unsigned long flags, line;
-	int octx;
-
-	FLUSH_BEGIN(mm)
-	flush_user_windows();
-	local_irq_save(flags);
-	octx = srmmu_get_context();
-	srmmu_set_context(mm->context);
-	a = 0x20; b = 0x40; c = 0x60;
-	d = 0x80; e = 0xa0; f = 0xc0; g = 0xe0;
-
-	page &= PAGE_MASK;
-	line = (page + PAGE_SIZE) - 0x100;
-	goto inside;
-	do {
-		line -= 0x100;
-	inside:
-			__asm__ __volatile__("sta %%g0, [%0] %1\n\t"
-					     "sta %%g0, [%0 + %2] %1\n\t"
-					     "sta %%g0, [%0 + %3] %1\n\t"
-					     "sta %%g0, [%0 + %4] %1\n\t"
-					     "sta %%g0, [%0 + %5] %1\n\t"
-					     "sta %%g0, [%0 + %6] %1\n\t"
-					     "sta %%g0, [%0 + %7] %1\n\t"
-					     "sta %%g0, [%0 + %8] %1\n\t" : :
-					     "r" (line),
-					     "i" (ASI_M_FLUSH_PAGE),
-					     "r" (a), "r" (b), "r" (c), "r" (d),
-					     "r" (e), "r" (f), "r" (g));
-	} while(line != page);
-	srmmu_set_context(octx);
-	local_irq_restore(flags);
-	FLUSH_END
-}
-
-/* Cypress is copy-back, at least that is how we configure it. */
-static void cypress_flush_page_to_ram(unsigned long page)
-{
-	register unsigned long a, b, c, d, e, f, g;
-	unsigned long line;
-
-	a = 0x20; b = 0x40; c = 0x60; d = 0x80; e = 0xa0; f = 0xc0; g = 0xe0;
-	page &= PAGE_MASK;
-	line = (page + PAGE_SIZE) - 0x100;
-	goto inside;
-	do {
-		line -= 0x100;
-	inside:
-		__asm__ __volatile__("sta %%g0, [%0] %1\n\t"
-				     "sta %%g0, [%0 + %2] %1\n\t"
-				     "sta %%g0, [%0 + %3] %1\n\t"
-				     "sta %%g0, [%0 + %4] %1\n\t"
-				     "sta %%g0, [%0 + %5] %1\n\t"
-				     "sta %%g0, [%0 + %6] %1\n\t"
-				     "sta %%g0, [%0 + %7] %1\n\t"
-				     "sta %%g0, [%0 + %8] %1\n\t" : :
-				     "r" (line),
-				     "i" (ASI_M_FLUSH_PAGE),
-				     "r" (a), "r" (b), "r" (c), "r" (d),
-				     "r" (e), "r" (f), "r" (g));
-	} while(line != page);
-}
-
-/* Cypress is also IO cache coherent. */
-static void cypress_flush_page_for_dma(unsigned long page)
-{
-}
-
-/* Cypress has unified L2 VIPT, from which both instructions and data
- * are stored.  It does not have an onboard icache of any sort, therefore
- * no flush is necessary.
- */
-static void cypress_flush_sig_insns(struct mm_struct *mm, unsigned long insn_addr)
-{
-}
-
-static void cypress_flush_tlb_all(void)
-{
-	srmmu_flush_whole_tlb();
-}
-
-static void cypress_flush_tlb_mm(struct mm_struct *mm)
-{
-	FLUSH_BEGIN(mm)
-	__asm__ __volatile__(
-	"lda	[%0] %3, %%g5\n\t"
-	"sta	%2, [%0] %3\n\t"
-	"sta	%%g0, [%1] %4\n\t"
-	"sta	%%g5, [%0] %3\n"
-	: /* no outputs */
-	: "r" (SRMMU_CTX_REG), "r" (0x300), "r" (mm->context),
-	  "i" (ASI_M_MMUREGS), "i" (ASI_M_FLUSH_PROBE)
-	: "g5");
-	FLUSH_END
-}
-
-static void cypress_flush_tlb_range(struct vm_area_struct *vma, unsigned long start, unsigned long end)
-{
-	struct mm_struct *mm = vma->vm_mm;
-	unsigned long size;
-
-	FLUSH_BEGIN(mm)
-	start &= SRMMU_PGDIR_MASK;
-	size = SRMMU_PGDIR_ALIGN(end) - start;
-	__asm__ __volatile__(
-		"lda	[%0] %5, %%g5\n\t"
-		"sta	%1, [%0] %5\n"
-		"1:\n\t"
-		"subcc	%3, %4, %3\n\t"
-		"bne	1b\n\t"
-		" sta	%%g0, [%2 + %3] %6\n\t"
-		"sta	%%g5, [%0] %5\n"
-	: /* no outputs */
-	: "r" (SRMMU_CTX_REG), "r" (mm->context), "r" (start | 0x200),
-	  "r" (size), "r" (SRMMU_PGDIR_SIZE), "i" (ASI_M_MMUREGS),
-	  "i" (ASI_M_FLUSH_PROBE)
-	: "g5", "cc");
-	FLUSH_END
-}
-
-static void cypress_flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
-{
-	struct mm_struct *mm = vma->vm_mm;
-
-	FLUSH_BEGIN(mm)
-	__asm__ __volatile__(
-	"lda	[%0] %3, %%g5\n\t"
-	"sta	%1, [%0] %3\n\t"
-	"sta	%%g0, [%2] %4\n\t"
-	"sta	%%g5, [%0] %3\n"
-	: /* no outputs */
-	: "r" (SRMMU_CTX_REG), "r" (mm->context), "r" (page & PAGE_MASK),
-	  "i" (ASI_M_MMUREGS), "i" (ASI_M_FLUSH_PROBE)
-	: "g5");
-	FLUSH_END
-}
-
 /* viking.S */
 extern void viking_flush_cache_all(void);
 extern void viking_flush_cache_mm(struct mm_struct *mm);
@@ -1065,21 +620,21 @@ static void __init srmmu_early_allocate_ptable_skeleton(unsigned long start,
 
 	while(start < end) {
 		pgdp = pgd_offset_k(start);
-		if(srmmu_pgd_none(*(pgd_t *)__nocache_fix(pgdp))) {
+		if (pgd_none(*(pgd_t *)__nocache_fix(pgdp))) {
 			pmdp = (pmd_t *) __srmmu_get_nocache(
 			    SRMMU_PMD_TABLE_SIZE, SRMMU_PMD_TABLE_SIZE);
 			if (pmdp == NULL)
 				early_pgtable_allocfail("pmd");
 			memset(__nocache_fix(pmdp), 0, SRMMU_PMD_TABLE_SIZE);
-			srmmu_pgd_set(__nocache_fix(pgdp), pmdp);
+			pgd_set(__nocache_fix(pgdp), pmdp);
 		}
-		pmdp = srmmu_pmd_offset(__nocache_fix(pgdp), start);
+		pmdp = pmd_offset(__nocache_fix(pgdp), start);
 		if(srmmu_pmd_none(*(pmd_t *)__nocache_fix(pmdp))) {
 			ptep = (pte_t *)__srmmu_get_nocache(PTE_SIZE, PTE_SIZE);
 			if (ptep == NULL)
 				early_pgtable_allocfail("pte");
 			memset(__nocache_fix(ptep), 0, PTE_SIZE);
-			srmmu_pmd_set(__nocache_fix(pmdp), ptep);
+			pmd_set(__nocache_fix(pmdp), ptep);
 		}
 		if (start > (0xffffffffUL - PMD_SIZE))
 			break;
@@ -1096,21 +651,21 @@ static void __init srmmu_allocate_ptable_skeleton(unsigned long start,
 
 	while(start < end) {
 		pgdp = pgd_offset_k(start);
-		if(srmmu_pgd_none(*pgdp)) {
+		if (pgd_none(*pgdp)) {
 			pmdp = (pmd_t *)__srmmu_get_nocache(SRMMU_PMD_TABLE_SIZE, SRMMU_PMD_TABLE_SIZE);
 			if (pmdp == NULL)
 				early_pgtable_allocfail("pmd");
 			memset(pmdp, 0, SRMMU_PMD_TABLE_SIZE);
-			srmmu_pgd_set(pgdp, pmdp);
+			pgd_set(pgdp, pmdp);
 		}
-		pmdp = srmmu_pmd_offset(pgdp, start);
+		pmdp = pmd_offset(pgdp, start);
 		if(srmmu_pmd_none(*pmdp)) {
 			ptep = (pte_t *) __srmmu_get_nocache(PTE_SIZE,
 							     PTE_SIZE);
 			if (ptep == NULL)
 				early_pgtable_allocfail("pte");
 			memset(ptep, 0, PTE_SIZE);
-			srmmu_pmd_set(pmdp, ptep);
+			pmd_set(pmdp, ptep);
 		}
 		if (start > (0xffffffffUL - PMD_SIZE))
 			break;
@@ -1162,21 +717,21 @@ static void __init srmmu_inherit_prom_mappings(unsigned long start,
 			start += SRMMU_PGDIR_SIZE;
 			continue;
 		}
-		if(srmmu_pgd_none(*(pgd_t *)__nocache_fix(pgdp))) {
+		if (pgd_none(*(pgd_t *)__nocache_fix(pgdp))) {
 			pmdp = (pmd_t *)__srmmu_get_nocache(SRMMU_PMD_TABLE_SIZE, SRMMU_PMD_TABLE_SIZE);
 			if (pmdp == NULL)
 				early_pgtable_allocfail("pmd");
 			memset(__nocache_fix(pmdp), 0, SRMMU_PMD_TABLE_SIZE);
-			srmmu_pgd_set(__nocache_fix(pgdp), pmdp);
+			pgd_set(__nocache_fix(pgdp), pmdp);
 		}
-		pmdp = srmmu_pmd_offset(__nocache_fix(pgdp), start);
+		pmdp = pmd_offset(__nocache_fix(pgdp), start);
 		if(srmmu_pmd_none(*(pmd_t *)__nocache_fix(pmdp))) {
 			ptep = (pte_t *) __srmmu_get_nocache(PTE_SIZE,
 							     PTE_SIZE);
 			if (ptep == NULL)
 				early_pgtable_allocfail("pte");
 			memset(__nocache_fix(ptep), 0, PTE_SIZE);
-			srmmu_pmd_set(__nocache_fix(pmdp), ptep);
+			pmd_set(__nocache_fix(pmdp), ptep);
 		}
 		if(what == 1) {
 			/*
@@ -1190,7 +745,7 @@ static void __init srmmu_inherit_prom_mappings(unsigned long start,
 			start += SRMMU_REAL_PMD_SIZE;
 			continue;
 		}
-		ptep = srmmu_pte_offset(__nocache_fix(pmdp), start);
+		ptep = pte_offset_kernel(__nocache_fix(pmdp), start);
 		*(pte_t *)__nocache_fix(ptep) = __pte(prompte);
 		start += PAGE_SIZE;
 	}
@@ -1231,13 +786,6 @@ static unsigned long __init map_spbank(unsigned long vbase, int sp_entry)
 	return vstart;
 }
 
-static inline void memprobe_error(char *msg)
-{
-	prom_printf(msg);
-	prom_printf("Halting now...\n");
-	prom_halt();
-}
-
 static inline void map_kernel(void)
 {
 	int i;
@@ -1249,8 +797,6 @@ static inline void map_kernel(void)
 	for (i = 0; sp_banks[i].num_bytes != 0; i++) {
 		map_spbank((unsigned long)__va(sp_banks[i].base_addr), i);
 	}
-
-	BTFIXUPSET_SIMM13(user_ptrs_per_pgd, PAGE_OFFSET / SRMMU_PGDIR_SIZE);
 }
 
 /* Paging initialization on the Sparc Reference MMU. */
@@ -1312,7 +858,7 @@ void __init srmmu_paging_init(void)
 	srmmu_set_ctable_ptr((unsigned long)srmmu_ctx_table_phys);
 #ifdef CONFIG_SMP
 	/* Stop from hanging here... */
-	local_flush_tlb_all();
+	local_ops->tlb_all();
 #else
 	flush_tlb_all();
 #endif
@@ -1326,8 +872,8 @@ void __init srmmu_paging_init(void)
 	srmmu_allocate_ptable_skeleton(PKMAP_BASE, PKMAP_END);
 
 	pgd = pgd_offset_k(PKMAP_BASE);
-	pmd = srmmu_pmd_offset(pgd, PKMAP_BASE);
-	pte = srmmu_pte_offset(pmd, PKMAP_BASE);
+	pmd = pmd_offset(pgd, PKMAP_BASE);
+	pte = pte_offset_kernel(pmd, PKMAP_BASE);
 	pkmap_page_table = pte;
 
 	flush_cache_all();
@@ -1359,7 +905,7 @@ void __init srmmu_paging_init(void)
 	}
 }
 
-static void srmmu_mmu_info(struct seq_file *m)
+void mmu_info(struct seq_file *m)
 {
 	seq_printf(m, 
 		   "MMU type\t: %s\n"
@@ -1372,11 +918,7 @@ static void srmmu_mmu_info(struct seq_file *m)
 		   srmmu_nocache_map.used << SRMMU_NOCACHE_BITMAP_SHIFT);
 }
 
-static void srmmu_update_mmu_cache(struct vm_area_struct * vma, unsigned long address, pte_t pte)
-{
-}
-
-static void srmmu_destroy_context(struct mm_struct *mm)
+void destroy_context(struct mm_struct *mm)
 {
 
 	if(mm->context != NO_CONTEXT) {
@@ -1474,6 +1016,20 @@ static void __cpuinit poke_hypersparc(void)
 	clear = srmmu_get_fstatus();
 }
 
+static const struct sparc32_cachetlb_ops hypersparc_ops = {
+	.cache_all	= hypersparc_flush_cache_all,
+	.cache_mm	= hypersparc_flush_cache_mm,
+	.cache_page	= hypersparc_flush_cache_page,
+	.cache_range	= hypersparc_flush_cache_range,
+	.tlb_all	= hypersparc_flush_tlb_all,
+	.tlb_mm		= hypersparc_flush_tlb_mm,
+	.tlb_page	= hypersparc_flush_tlb_page,
+	.tlb_range	= hypersparc_flush_tlb_range,
+	.page_to_ram	= hypersparc_flush_page_to_ram,
+	.sig_insns	= hypersparc_flush_sig_insns,
+	.page_for_dma	= hypersparc_flush_page_for_dma,
+};
+
 static void __init init_hypersparc(void)
 {
 	srmmu_name = "ROSS HyperSparc";
@@ -1482,118 +1038,13 @@ static void __init init_hypersparc(void)
 	init_vac_layout();
 
 	is_hypersparc = 1;
-
-	BTFIXUPSET_CALL(pte_clear, srmmu_pte_clear, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(pmd_clear, srmmu_pmd_clear, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(pgd_clear, srmmu_pgd_clear, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_cache_all, hypersparc_flush_cache_all, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_cache_mm, hypersparc_flush_cache_mm, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_cache_range, hypersparc_flush_cache_range, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_cache_page, hypersparc_flush_cache_page, BTFIXUPCALL_NORM);
-
-	BTFIXUPSET_CALL(flush_tlb_all, hypersparc_flush_tlb_all, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_tlb_mm, hypersparc_flush_tlb_mm, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_tlb_range, hypersparc_flush_tlb_range, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_tlb_page, hypersparc_flush_tlb_page, BTFIXUPCALL_NORM);
-
-	BTFIXUPSET_CALL(__flush_page_to_ram, hypersparc_flush_page_to_ram, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_sig_insns, hypersparc_flush_sig_insns, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_page_for_dma, hypersparc_flush_page_for_dma, BTFIXUPCALL_NOP);
-
+	sparc32_cachetlb_ops = &hypersparc_ops;
 
 	poke_srmmu = poke_hypersparc;
 
 	hypersparc_setup_blockops();
 }
 
-static void __cpuinit poke_cypress(void)
-{
-	unsigned long mreg = srmmu_get_mmureg();
-	unsigned long faddr, tagval;
-	volatile unsigned long cypress_sucks;
-	volatile unsigned long clear;
-
-	clear = srmmu_get_faddr();
-	clear = srmmu_get_fstatus();
-
-	if (!(mreg & CYPRESS_CENABLE)) {
-		for(faddr = 0x0; faddr < 0x10000; faddr += 20) {
-			__asm__ __volatile__("sta %%g0, [%0 + %1] %2\n\t"
-					     "sta %%g0, [%0] %2\n\t" : :
-					     "r" (faddr), "r" (0x40000),
-					     "i" (ASI_M_DATAC_TAG));
-		}
-	} else {
-		for(faddr = 0; faddr < 0x10000; faddr += 0x20) {
-			__asm__ __volatile__("lda [%1 + %2] %3, %0\n\t" :
-					     "=r" (tagval) :
-					     "r" (faddr), "r" (0x40000),
-					     "i" (ASI_M_DATAC_TAG));
-
-			/* If modified and valid, kick it. */
-			if((tagval & 0x60) == 0x60)
-				cypress_sucks = *(unsigned long *)
-							(0xf0020000 + faddr);
-		}
-	}
-
-	/* And one more, for our good neighbor, Mr. Broken Cypress. */
-	clear = srmmu_get_faddr();
-	clear = srmmu_get_fstatus();
-
-	mreg |= (CYPRESS_CENABLE | CYPRESS_CMODE);
-	srmmu_set_mmureg(mreg);
-}
-
-static void __init init_cypress_common(void)
-{
-	init_vac_layout();
-
-	BTFIXUPSET_CALL(pte_clear, srmmu_pte_clear, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(pmd_clear, srmmu_pmd_clear, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(pgd_clear, srmmu_pgd_clear, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_cache_all, cypress_flush_cache_all, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_cache_mm, cypress_flush_cache_mm, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_cache_range, cypress_flush_cache_range, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_cache_page, cypress_flush_cache_page, BTFIXUPCALL_NORM);
-
-	BTFIXUPSET_CALL(flush_tlb_all, cypress_flush_tlb_all, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_tlb_mm, cypress_flush_tlb_mm, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_tlb_page, cypress_flush_tlb_page, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_tlb_range, cypress_flush_tlb_range, BTFIXUPCALL_NORM);
-
-
-	BTFIXUPSET_CALL(__flush_page_to_ram, cypress_flush_page_to_ram, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_sig_insns, cypress_flush_sig_insns, BTFIXUPCALL_NOP);
-	BTFIXUPSET_CALL(flush_page_for_dma, cypress_flush_page_for_dma, BTFIXUPCALL_NOP);
-
-	poke_srmmu = poke_cypress;
-}
-
-static void __init init_cypress_604(void)
-{
-	srmmu_name = "ROSS Cypress-604(UP)";
-	srmmu_modtype = Cypress;
-	init_cypress_common();
-}
-
-static void __init init_cypress_605(unsigned long mrev)
-{
-	srmmu_name = "ROSS Cypress-605(MP)";
-	if(mrev == 0xe) {
-		srmmu_modtype = Cypress_vE;
-		hwbug_bitmask |= HWBUG_COPYBACK_BROKEN;
-	} else {
-		if(mrev == 0xd) {
-			srmmu_modtype = Cypress_vD;
-			hwbug_bitmask |= HWBUG_ASIFLUSH_BROKEN;
-		} else {
-			srmmu_modtype = Cypress;
-		}
-	}
-	init_cypress_common();
-}
-
 static void __cpuinit poke_swift(void)
 {
 	unsigned long mreg;
@@ -1617,6 +1068,20 @@ static void __cpuinit poke_swift(void)
 	srmmu_set_mmureg(mreg);
 }
 
+static const struct sparc32_cachetlb_ops swift_ops = {
+	.cache_all	= swift_flush_cache_all,
+	.cache_mm	= swift_flush_cache_mm,
+	.cache_page	= swift_flush_cache_page,
+	.cache_range	= swift_flush_cache_range,
+	.tlb_all	= swift_flush_tlb_all,
+	.tlb_mm		= swift_flush_tlb_mm,
+	.tlb_page	= swift_flush_tlb_page,
+	.tlb_range	= swift_flush_tlb_range,
+	.page_to_ram	= swift_flush_page_to_ram,
+	.sig_insns	= swift_flush_sig_insns,
+	.page_for_dma	= swift_flush_page_for_dma,
+};
+
 #define SWIFT_MASKID_ADDR  0x10003018
 static void __init init_swift(void)
 {
@@ -1667,23 +1132,7 @@ static void __init init_swift(void)
 		break;
 	}
 
-	BTFIXUPSET_CALL(flush_cache_all, swift_flush_cache_all, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_cache_mm, swift_flush_cache_mm, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_cache_page, swift_flush_cache_page, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_cache_range, swift_flush_cache_range, BTFIXUPCALL_NORM);
-
-
-	BTFIXUPSET_CALL(flush_tlb_all, swift_flush_tlb_all, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_tlb_mm, swift_flush_tlb_mm, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_tlb_page, swift_flush_tlb_page, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_tlb_range, swift_flush_tlb_range, BTFIXUPCALL_NORM);
-
-	BTFIXUPSET_CALL(__flush_page_to_ram, swift_flush_page_to_ram, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_sig_insns, swift_flush_sig_insns, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_page_for_dma, swift_flush_page_for_dma, BTFIXUPCALL_NORM);
-
-	BTFIXUPSET_CALL(update_mmu_cache, swift_update_mmu_cache, BTFIXUPCALL_NORM);
-
+	sparc32_cachetlb_ops = &swift_ops;
 	flush_page_for_dma_global = 0;
 
 	/*
@@ -1816,26 +1265,25 @@ static void __cpuinit poke_turbosparc(void)
 	srmmu_set_mmureg(mreg);
 }
 
+static const struct sparc32_cachetlb_ops turbosparc_ops = {
+	.cache_all	= turbosparc_flush_cache_all,
+	.cache_mm	= turbosparc_flush_cache_mm,
+	.cache_page	= turbosparc_flush_cache_page,
+	.cache_range	= turbosparc_flush_cache_range,
+	.tlb_all	= turbosparc_flush_tlb_all,
+	.tlb_mm		= turbosparc_flush_tlb_mm,
+	.tlb_page	= turbosparc_flush_tlb_page,
+	.tlb_range	= turbosparc_flush_tlb_range,
+	.page_to_ram	= turbosparc_flush_page_to_ram,
+	.sig_insns	= turbosparc_flush_sig_insns,
+	.page_for_dma	= turbosparc_flush_page_for_dma,
+};
+
 static void __init init_turbosparc(void)
 {
 	srmmu_name = "Fujitsu TurboSparc";
 	srmmu_modtype = TurboSparc;
-
-	BTFIXUPSET_CALL(flush_cache_all, turbosparc_flush_cache_all, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_cache_mm, turbosparc_flush_cache_mm, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_cache_page, turbosparc_flush_cache_page, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_cache_range, turbosparc_flush_cache_range, BTFIXUPCALL_NORM);
-
-	BTFIXUPSET_CALL(flush_tlb_all, turbosparc_flush_tlb_all, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_tlb_mm, turbosparc_flush_tlb_mm, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_tlb_page, turbosparc_flush_tlb_page, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_tlb_range, turbosparc_flush_tlb_range, BTFIXUPCALL_NORM);
-
-	BTFIXUPSET_CALL(__flush_page_to_ram, turbosparc_flush_page_to_ram, BTFIXUPCALL_NORM);
-
-	BTFIXUPSET_CALL(flush_sig_insns, turbosparc_flush_sig_insns, BTFIXUPCALL_NOP);
-	BTFIXUPSET_CALL(flush_page_for_dma, turbosparc_flush_page_for_dma, BTFIXUPCALL_NORM);
-
+	sparc32_cachetlb_ops = &turbosparc_ops;
 	poke_srmmu = poke_turbosparc;
 }
 
@@ -1850,6 +1298,20 @@ static void __cpuinit poke_tsunami(void)
 	srmmu_set_mmureg(mreg);
 }
 
+static const struct sparc32_cachetlb_ops tsunami_ops = {
+	.cache_all	= tsunami_flush_cache_all,
+	.cache_mm	= tsunami_flush_cache_mm,
+	.cache_page	= tsunami_flush_cache_page,
+	.cache_range	= tsunami_flush_cache_range,
+	.tlb_all	= tsunami_flush_tlb_all,
+	.tlb_mm		= tsunami_flush_tlb_mm,
+	.tlb_page	= tsunami_flush_tlb_page,
+	.tlb_range	= tsunami_flush_tlb_range,
+	.page_to_ram	= tsunami_flush_page_to_ram,
+	.sig_insns	= tsunami_flush_sig_insns,
+	.page_for_dma	= tsunami_flush_page_for_dma,
+};
+
 static void __init init_tsunami(void)
 {
 	/*
@@ -1860,22 +1322,7 @@ static void __init init_tsunami(void)
 
 	srmmu_name = "TI Tsunami";
 	srmmu_modtype = Tsunami;
-
-	BTFIXUPSET_CALL(flush_cache_all, tsunami_flush_cache_all, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_cache_mm, tsunami_flush_cache_mm, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_cache_page, tsunami_flush_cache_page, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_cache_range, tsunami_flush_cache_range, BTFIXUPCALL_NORM);
-
-
-	BTFIXUPSET_CALL(flush_tlb_all, tsunami_flush_tlb_all, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_tlb_mm, tsunami_flush_tlb_mm, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_tlb_page, tsunami_flush_tlb_page, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_tlb_range, tsunami_flush_tlb_range, BTFIXUPCALL_NORM);
-
-	BTFIXUPSET_CALL(__flush_page_to_ram, tsunami_flush_page_to_ram, BTFIXUPCALL_NOP);
-	BTFIXUPSET_CALL(flush_sig_insns, tsunami_flush_sig_insns, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_page_for_dma, tsunami_flush_page_for_dma, BTFIXUPCALL_NORM);
-
+	sparc32_cachetlb_ops = &tsunami_ops;
 	poke_srmmu = poke_tsunami;
 
 	tsunami_setup_blockops();
@@ -1886,7 +1333,7 @@ static void __cpuinit poke_viking(void)
 	unsigned long mreg = srmmu_get_mmureg();
 	static int smp_catch;
 
-	if(viking_mxcc_present) {
+	if (viking_mxcc_present) {
 		unsigned long mxcc_control = mxcc_get_creg();
 
 		mxcc_control |= (MXCC_CTL_ECE | MXCC_CTL_PRE | MXCC_CTL_MCE);
@@ -1923,6 +1370,52 @@ static void __cpuinit poke_viking(void)
 	srmmu_set_mmureg(mreg);
 }
 
+static struct sparc32_cachetlb_ops viking_ops = {
+	.cache_all	= viking_flush_cache_all,
+	.cache_mm	= viking_flush_cache_mm,
+	.cache_page	= viking_flush_cache_page,
+	.cache_range	= viking_flush_cache_range,
+	.tlb_all	= viking_flush_tlb_all,
+	.tlb_mm		= viking_flush_tlb_mm,
+	.tlb_page	= viking_flush_tlb_page,
+	.tlb_range	= viking_flush_tlb_range,
+	.page_to_ram	= viking_flush_page_to_ram,
+	.sig_insns	= viking_flush_sig_insns,
+	.page_for_dma	= viking_flush_page_for_dma,
+};
+
+#ifdef CONFIG_SMP
+/* On sun4d the cpu broadcasts local TLB flushes, so we can just
+ * perform the local TLB flush and all the other cpus will see it.
+ * But, unfortunately, there is a bug in the sun4d XBUS backplane
+ * that requires that we add some synchronization to these flushes.
+ *
+ * The bug is that the fifo which keeps track of all the pending TLB
+ * broadcasts in the system is an entry or two too small, so if we
+ * have too many going at once we'll overflow that fifo and lose a TLB
+ * flush resulting in corruption.
+ *
+ * Our workaround is to take a global spinlock around the TLB flushes,
+ * which guarentees we won't ever have too many pending.  It's a big
+ * hammer, but a semaphore like system to make sure we only have N TLB
+ * flushes going at once will require SMP locking anyways so there's
+ * no real value in trying any harder than this.
+ */
+static struct sparc32_cachetlb_ops viking_sun4d_smp_ops = {
+	.cache_all	= viking_flush_cache_all,
+	.cache_mm	= viking_flush_cache_mm,
+	.cache_page	= viking_flush_cache_page,
+	.cache_range	= viking_flush_cache_range,
+	.tlb_all	= sun4dsmp_flush_tlb_all,
+	.tlb_mm		= sun4dsmp_flush_tlb_mm,
+	.tlb_page	= sun4dsmp_flush_tlb_page,
+	.tlb_range	= sun4dsmp_flush_tlb_range,
+	.page_to_ram	= viking_flush_page_to_ram,
+	.sig_insns	= viking_flush_sig_insns,
+	.page_for_dma	= viking_flush_page_for_dma,
+};
+#endif
+
 static void __init init_viking(void)
 {
 	unsigned long mreg = srmmu_get_mmureg();
@@ -1933,10 +1426,6 @@ static void __init init_viking(void)
 		viking_mxcc_present = 0;
 		msi_set_sync();
 
-		BTFIXUPSET_CALL(pte_clear, srmmu_pte_clear, BTFIXUPCALL_NORM);
-		BTFIXUPSET_CALL(pmd_clear, srmmu_pmd_clear, BTFIXUPCALL_NORM);
-		BTFIXUPSET_CALL(pgd_clear, srmmu_pgd_clear, BTFIXUPCALL_NORM);
-
 		/*
 		 * We need this to make sure old viking takes no hits
 		 * on it's cache for dma snoops to workaround the
@@ -1944,84 +1433,28 @@ static void __init init_viking(void)
 		 * This is only necessary because of the new way in
 		 * which we use the IOMMU.
 		 */
-		BTFIXUPSET_CALL(flush_page_for_dma, viking_flush_page, BTFIXUPCALL_NORM);
-
+		viking_ops.page_for_dma = viking_flush_page;
+#ifdef CONFIG_SMP
+		viking_sun4d_smp_ops.page_for_dma = viking_flush_page;
+#endif
 		flush_page_for_dma_global = 0;
 	} else {
 		srmmu_name = "TI Viking/MXCC";
 		viking_mxcc_present = 1;
-
 		srmmu_cache_pagetables = 1;
-
-		/* MXCC vikings lack the DMA snooping bug. */
-		BTFIXUPSET_CALL(flush_page_for_dma, viking_flush_page_for_dma, BTFIXUPCALL_NOP);
 	}
 
-	BTFIXUPSET_CALL(flush_cache_all, viking_flush_cache_all, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_cache_mm, viking_flush_cache_mm, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_cache_page, viking_flush_cache_page, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_cache_range, viking_flush_cache_range, BTFIXUPCALL_NORM);
-
+	sparc32_cachetlb_ops = (const struct sparc32_cachetlb_ops *)
+		&viking_ops;
 #ifdef CONFIG_SMP
-	if (sparc_cpu_model == sun4d) {
-		BTFIXUPSET_CALL(flush_tlb_all, sun4dsmp_flush_tlb_all, BTFIXUPCALL_NORM);
-		BTFIXUPSET_CALL(flush_tlb_mm, sun4dsmp_flush_tlb_mm, BTFIXUPCALL_NORM);
-		BTFIXUPSET_CALL(flush_tlb_page, sun4dsmp_flush_tlb_page, BTFIXUPCALL_NORM);
-		BTFIXUPSET_CALL(flush_tlb_range, sun4dsmp_flush_tlb_range, BTFIXUPCALL_NORM);
-	} else
+	if (sparc_cpu_model == sun4d)
+		sparc32_cachetlb_ops = (const struct sparc32_cachetlb_ops *)
+			&viking_sun4d_smp_ops;
 #endif
-	{
-		BTFIXUPSET_CALL(flush_tlb_all, viking_flush_tlb_all, BTFIXUPCALL_NORM);
-		BTFIXUPSET_CALL(flush_tlb_mm, viking_flush_tlb_mm, BTFIXUPCALL_NORM);
-		BTFIXUPSET_CALL(flush_tlb_page, viking_flush_tlb_page, BTFIXUPCALL_NORM);
-		BTFIXUPSET_CALL(flush_tlb_range, viking_flush_tlb_range, BTFIXUPCALL_NORM);
-	}
-
-	BTFIXUPSET_CALL(__flush_page_to_ram, viking_flush_page_to_ram, BTFIXUPCALL_NOP);
-	BTFIXUPSET_CALL(flush_sig_insns, viking_flush_sig_insns, BTFIXUPCALL_NOP);
 
 	poke_srmmu = poke_viking;
 }
 
-#ifdef CONFIG_SPARC_LEON
-
-void __init poke_leonsparc(void)
-{
-}
-
-void __init init_leon(void)
-{
-
-	srmmu_name = "LEON";
-
-	BTFIXUPSET_CALL(flush_cache_all, leon_flush_cache_all,
-			BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_cache_mm, leon_flush_cache_all,
-			BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_cache_page, leon_flush_pcache_all,
-			BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_cache_range, leon_flush_cache_all,
-			BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_page_for_dma, leon_flush_dcache_all,
-			BTFIXUPCALL_NORM);
-
-	BTFIXUPSET_CALL(flush_tlb_all, leon_flush_tlb_all, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_tlb_mm, leon_flush_tlb_all, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_tlb_page, leon_flush_tlb_all, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_tlb_range, leon_flush_tlb_all, BTFIXUPCALL_NORM);
-
-	BTFIXUPSET_CALL(__flush_page_to_ram, leon_flush_cache_all,
-			BTFIXUPCALL_NOP);
-	BTFIXUPSET_CALL(flush_sig_insns, leon_flush_cache_all, BTFIXUPCALL_NOP);
-
-	poke_srmmu = poke_leonsparc;
-
-	srmmu_cache_pagetables = 0;
-
-	leon_flush_during_switch = leon_flush_needed();
-}
-#endif
-
 /* Probe for the srmmu chip version. */
 static void __init get_srmmu_type(void)
 {
@@ -2052,22 +1485,15 @@ static void __init get_srmmu_type(void)
 			break;
 		case 0:
 		case 2:
-			/* Uniprocessor Cypress */
-			init_cypress_604();
-			break;
 		case 10:
 		case 11:
 		case 12:
-			/* _REALLY OLD_ Cypress MP chips... */
 		case 13:
 		case 14:
 		case 15:
-			/* MP Cypress mmu/cache-controller */
-			init_cypress_605(mod_rev);
-			break;
 		default:
-			/* Some other Cypress revision, assume a 605. */
-			init_cypress_605(mod_rev);
+			prom_printf("Sparc-Linux Cypress support does not longer exit.\n");
+			prom_halt();
 			break;
 		}
 		return;
@@ -2123,203 +1549,193 @@ static void __init get_srmmu_type(void)
 	srmmu_is_bad();
 }
 
-/* don't laugh, static pagetables */
-static void srmmu_check_pgt_cache(int low, int high)
+#ifdef CONFIG_SMP
+/* Local cross-calls. */
+static void smp_flush_page_for_dma(unsigned long page)
 {
+	xc1((smpfunc_t) local_ops->page_for_dma, page);
+	local_ops->page_for_dma(page);
 }
 
-extern unsigned long spwin_mmu_patchme, fwin_mmu_patchme,
-	tsetup_mmu_patchme, rtrap_mmu_patchme;
-
-extern unsigned long spwin_srmmu_stackchk, srmmu_fwin_stackchk,
-	tsetup_srmmu_stackchk, srmmu_rett_stackchk;
-
-extern unsigned long srmmu_fault;
-
-#define PATCH_BRANCH(insn, dest) do { \
-		iaddr = &(insn); \
-		daddr = &(dest); \
-		*iaddr = SPARC_BRANCH((unsigned long) daddr, (unsigned long) iaddr); \
-	} while(0)
-
-static void __init patch_window_trap_handlers(void)
+static void smp_flush_cache_all(void)
 {
-	unsigned long *iaddr, *daddr;
-	
-	PATCH_BRANCH(spwin_mmu_patchme, spwin_srmmu_stackchk);
-	PATCH_BRANCH(fwin_mmu_patchme, srmmu_fwin_stackchk);
-	PATCH_BRANCH(tsetup_mmu_patchme, tsetup_srmmu_stackchk);
-	PATCH_BRANCH(rtrap_mmu_patchme, srmmu_rett_stackchk);
-	PATCH_BRANCH(sparc_ttable[SP_TRAP_TFLT].inst_three, srmmu_fault);
-	PATCH_BRANCH(sparc_ttable[SP_TRAP_DFLT].inst_three, srmmu_fault);
-	PATCH_BRANCH(sparc_ttable[SP_TRAP_DACC].inst_three, srmmu_fault);
+	xc0((smpfunc_t) local_ops->cache_all);
+	local_ops->cache_all();
 }
 
-#ifdef CONFIG_SMP
-/* Local cross-calls. */
-static void smp_flush_page_for_dma(unsigned long page)
+static void smp_flush_tlb_all(void)
 {
-	xc1((smpfunc_t) BTFIXUP_CALL(local_flush_page_for_dma), page);
-	local_flush_page_for_dma(page);
+	xc0((smpfunc_t) local_ops->tlb_all);
+	local_ops->tlb_all();
 }
 
-#endif
-
-static pte_t srmmu_pgoff_to_pte(unsigned long pgoff)
+static void smp_flush_cache_mm(struct mm_struct *mm)
 {
-	return __pte((pgoff << SRMMU_PTE_FILE_SHIFT) | SRMMU_FILE);
+	if (mm->context != NO_CONTEXT) {
+		cpumask_t cpu_mask;
+		cpumask_copy(&cpu_mask, mm_cpumask(mm));
+		cpumask_clear_cpu(smp_processor_id(), &cpu_mask);
+		if (!cpumask_empty(&cpu_mask))
+			xc1((smpfunc_t) local_ops->cache_mm, (unsigned long) mm);
+		local_ops->cache_mm(mm);
+	}
 }
 
-static unsigned long srmmu_pte_to_pgoff(pte_t pte)
+static void smp_flush_tlb_mm(struct mm_struct *mm)
 {
-	return pte_val(pte) >> SRMMU_PTE_FILE_SHIFT;
+	if (mm->context != NO_CONTEXT) {
+		cpumask_t cpu_mask;
+		cpumask_copy(&cpu_mask, mm_cpumask(mm));
+		cpumask_clear_cpu(smp_processor_id(), &cpu_mask);
+		if (!cpumask_empty(&cpu_mask)) {
+			xc1((smpfunc_t) local_ops->tlb_mm, (unsigned long) mm);
+			if (atomic_read(&mm->mm_users) == 1 && current->active_mm == mm)
+				cpumask_copy(mm_cpumask(mm),
+					     cpumask_of(smp_processor_id()));
+		}
+		local_ops->tlb_mm(mm);
+	}
 }
 
-static pgprot_t srmmu_pgprot_noncached(pgprot_t prot)
+static void smp_flush_cache_range(struct vm_area_struct *vma,
+				  unsigned long start,
+				  unsigned long end)
 {
-	prot &= ~__pgprot(SRMMU_CACHE);
+	struct mm_struct *mm = vma->vm_mm;
 
-	return prot;
+	if (mm->context != NO_CONTEXT) {
+		cpumask_t cpu_mask;
+		cpumask_copy(&cpu_mask, mm_cpumask(mm));
+		cpumask_clear_cpu(smp_processor_id(), &cpu_mask);
+		if (!cpumask_empty(&cpu_mask))
+			xc3((smpfunc_t) local_ops->cache_range,
+			    (unsigned long) vma, start, end);
+		local_ops->cache_range(vma, start, end);
+	}
 }
 
-/* Load up routines and constants for sun4m and sun4d mmu */
-void __init ld_mmu_srmmu(void)
+static void smp_flush_tlb_range(struct vm_area_struct *vma,
+				unsigned long start,
+				unsigned long end)
 {
-	extern void ld_mmu_iommu(void);
-	extern void ld_mmu_iounit(void);
-	extern void ___xchg32_sun4md(void);
-
-	BTFIXUPSET_SIMM13(pgdir_shift, SRMMU_PGDIR_SHIFT);
-	BTFIXUPSET_SETHI(pgdir_size, SRMMU_PGDIR_SIZE);
-	BTFIXUPSET_SETHI(pgdir_mask, SRMMU_PGDIR_MASK);
-
-	BTFIXUPSET_SIMM13(ptrs_per_pmd, SRMMU_PTRS_PER_PMD);
-	BTFIXUPSET_SIMM13(ptrs_per_pgd, SRMMU_PTRS_PER_PGD);
-
-	BTFIXUPSET_INT(page_none, pgprot_val(SRMMU_PAGE_NONE));
-	PAGE_SHARED = pgprot_val(SRMMU_PAGE_SHARED);
-	BTFIXUPSET_INT(page_copy, pgprot_val(SRMMU_PAGE_COPY));
-	BTFIXUPSET_INT(page_readonly, pgprot_val(SRMMU_PAGE_RDONLY));
-	BTFIXUPSET_INT(page_kernel, pgprot_val(SRMMU_PAGE_KERNEL));
-	page_kernel = pgprot_val(SRMMU_PAGE_KERNEL);
+	struct mm_struct *mm = vma->vm_mm;
 
-	/* Functions */
-	BTFIXUPSET_CALL(pgprot_noncached, srmmu_pgprot_noncached, BTFIXUPCALL_NORM);
-#ifndef CONFIG_SMP	
-	BTFIXUPSET_CALL(___xchg32, ___xchg32_sun4md, BTFIXUPCALL_SWAPG1G2);
-#endif
-	BTFIXUPSET_CALL(do_check_pgt_cache, srmmu_check_pgt_cache, BTFIXUPCALL_NOP);
+	if (mm->context != NO_CONTEXT) {
+		cpumask_t cpu_mask;
+		cpumask_copy(&cpu_mask, mm_cpumask(mm));
+		cpumask_clear_cpu(smp_processor_id(), &cpu_mask);
+		if (!cpumask_empty(&cpu_mask))
+			xc3((smpfunc_t) local_ops->tlb_range,
+			    (unsigned long) vma, start, end);
+		local_ops->tlb_range(vma, start, end);
+	}
+}
 
-	BTFIXUPSET_CALL(set_pte, srmmu_set_pte, BTFIXUPCALL_SWAPO0O1);
-	BTFIXUPSET_CALL(switch_mm, srmmu_switch_mm, BTFIXUPCALL_NORM);
+static void smp_flush_cache_page(struct vm_area_struct *vma, unsigned long page)
+{
+	struct mm_struct *mm = vma->vm_mm;
 
-	BTFIXUPSET_CALL(pte_pfn, srmmu_pte_pfn, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(pmd_page, srmmu_pmd_page, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(pgd_page_vaddr, srmmu_pgd_page, BTFIXUPCALL_NORM);
+	if (mm->context != NO_CONTEXT) {
+		cpumask_t cpu_mask;
+		cpumask_copy(&cpu_mask, mm_cpumask(mm));
+		cpumask_clear_cpu(smp_processor_id(), &cpu_mask);
+		if (!cpumask_empty(&cpu_mask))
+			xc2((smpfunc_t) local_ops->cache_page,
+			    (unsigned long) vma, page);
+		local_ops->cache_page(vma, page);
+	}
+}
 
-	BTFIXUPSET_CALL(pte_present, srmmu_pte_present, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(pte_clear, srmmu_pte_clear, BTFIXUPCALL_SWAPO0G0);
+static void smp_flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
+{
+	struct mm_struct *mm = vma->vm_mm;
 
-	BTFIXUPSET_CALL(pmd_bad, srmmu_pmd_bad, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(pmd_present, srmmu_pmd_present, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(pmd_clear, srmmu_pmd_clear, BTFIXUPCALL_SWAPO0G0);
+	if (mm->context != NO_CONTEXT) {
+		cpumask_t cpu_mask;
+		cpumask_copy(&cpu_mask, mm_cpumask(mm));
+		cpumask_clear_cpu(smp_processor_id(), &cpu_mask);
+		if (!cpumask_empty(&cpu_mask))
+			xc2((smpfunc_t) local_ops->tlb_page,
+			    (unsigned long) vma, page);
+		local_ops->tlb_page(vma, page);
+	}
+}
 
-	BTFIXUPSET_CALL(pgd_none, srmmu_pgd_none, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(pgd_bad, srmmu_pgd_bad, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(pgd_present, srmmu_pgd_present, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(pgd_clear, srmmu_pgd_clear, BTFIXUPCALL_SWAPO0G0);
+static void smp_flush_page_to_ram(unsigned long page)
+{
+	/* Current theory is that those who call this are the one's
+	 * who have just dirtied their cache with the pages contents
+	 * in kernel space, therefore we only run this on local cpu.
+	 *
+	 * XXX This experiment failed, research further... -DaveM
+	 */
+#if 1
+	xc1((smpfunc_t) local_ops->page_to_ram, page);
+#endif
+	local_ops->page_to_ram(page);
+}
+
+static void smp_flush_sig_insns(struct mm_struct *mm, unsigned long insn_addr)
+{
+	cpumask_t cpu_mask;
+	cpumask_copy(&cpu_mask, mm_cpumask(mm));
+	cpumask_clear_cpu(smp_processor_id(), &cpu_mask);
+	if (!cpumask_empty(&cpu_mask))
+		xc2((smpfunc_t) local_ops->sig_insns,
+		    (unsigned long) mm, insn_addr);
+	local_ops->sig_insns(mm, insn_addr);
+}
+
+static struct sparc32_cachetlb_ops smp_cachetlb_ops = {
+	.cache_all	= smp_flush_cache_all,
+	.cache_mm	= smp_flush_cache_mm,
+	.cache_page	= smp_flush_cache_page,
+	.cache_range	= smp_flush_cache_range,
+	.tlb_all	= smp_flush_tlb_all,
+	.tlb_mm		= smp_flush_tlb_mm,
+	.tlb_page	= smp_flush_tlb_page,
+	.tlb_range	= smp_flush_tlb_range,
+	.page_to_ram	= smp_flush_page_to_ram,
+	.sig_insns	= smp_flush_sig_insns,
+	.page_for_dma	= smp_flush_page_for_dma,
+};
+#endif
 
-	BTFIXUPSET_CALL(mk_pte, srmmu_mk_pte, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(mk_pte_phys, srmmu_mk_pte_phys, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(mk_pte_io, srmmu_mk_pte_io, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(pgd_set, srmmu_pgd_set, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(pmd_set, srmmu_pmd_set, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(pmd_populate, srmmu_pmd_populate, BTFIXUPCALL_NORM);
-	
-	BTFIXUPSET_INT(pte_modify_mask, SRMMU_CHG_MASK);
-	BTFIXUPSET_CALL(pmd_offset, srmmu_pmd_offset, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(pte_offset_kernel, srmmu_pte_offset, BTFIXUPCALL_NORM);
-
-	BTFIXUPSET_CALL(free_pte_fast, srmmu_free_pte_fast, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(pte_free, srmmu_pte_free, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(pte_alloc_one_kernel, srmmu_pte_alloc_one_kernel, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(pte_alloc_one, srmmu_pte_alloc_one, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(free_pmd_fast, srmmu_pmd_free, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(pmd_alloc_one, srmmu_pmd_alloc_one, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(free_pgd_fast, srmmu_free_pgd_fast, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(get_pgd_fast, srmmu_get_pgd_fast, BTFIXUPCALL_NORM);
-
-	BTFIXUPSET_HALF(pte_writei, SRMMU_WRITE);
-	BTFIXUPSET_HALF(pte_dirtyi, SRMMU_DIRTY);
-	BTFIXUPSET_HALF(pte_youngi, SRMMU_REF);
-	BTFIXUPSET_HALF(pte_filei, SRMMU_FILE);
-	BTFIXUPSET_HALF(pte_wrprotecti, SRMMU_WRITE);
-	BTFIXUPSET_HALF(pte_mkcleani, SRMMU_DIRTY);
-	BTFIXUPSET_HALF(pte_mkoldi, SRMMU_REF);
-	BTFIXUPSET_CALL(pte_mkwrite, srmmu_pte_mkwrite, BTFIXUPCALL_ORINT(SRMMU_WRITE));
-	BTFIXUPSET_CALL(pte_mkdirty, srmmu_pte_mkdirty, BTFIXUPCALL_ORINT(SRMMU_DIRTY));
-	BTFIXUPSET_CALL(pte_mkyoung, srmmu_pte_mkyoung, BTFIXUPCALL_ORINT(SRMMU_REF));
-	BTFIXUPSET_CALL(update_mmu_cache, srmmu_update_mmu_cache, BTFIXUPCALL_NOP);
-	BTFIXUPSET_CALL(destroy_context, srmmu_destroy_context, BTFIXUPCALL_NORM);
-
-	BTFIXUPSET_CALL(sparc_mapiorange, srmmu_mapiorange, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(sparc_unmapiorange, srmmu_unmapiorange, BTFIXUPCALL_NORM);
-
-	BTFIXUPSET_CALL(__swp_type, srmmu_swp_type, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(__swp_offset, srmmu_swp_offset, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(__swp_entry, srmmu_swp_entry, BTFIXUPCALL_NORM);
-
-	BTFIXUPSET_CALL(mmu_info, srmmu_mmu_info, BTFIXUPCALL_NORM);
-
-	BTFIXUPSET_CALL(alloc_thread_info_node, srmmu_alloc_thread_info_node, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(free_thread_info, srmmu_free_thread_info, BTFIXUPCALL_NORM);
-
-	BTFIXUPSET_CALL(pte_to_pgoff, srmmu_pte_to_pgoff, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(pgoff_to_pte, srmmu_pgoff_to_pte, BTFIXUPCALL_NORM);
+/* Load up routines and constants for sun4m and sun4d mmu */
+void __init load_mmu(void)
+{
+	extern void ld_mmu_iommu(void);
+	extern void ld_mmu_iounit(void);
 
+	/* Functions */
 	get_srmmu_type();
-	patch_window_trap_handlers();
 
 #ifdef CONFIG_SMP
 	/* El switcheroo... */
+	local_ops = sparc32_cachetlb_ops;
 
-	BTFIXUPCOPY_CALL(local_flush_cache_all, flush_cache_all);
-	BTFIXUPCOPY_CALL(local_flush_cache_mm, flush_cache_mm);
-	BTFIXUPCOPY_CALL(local_flush_cache_range, flush_cache_range);
-	BTFIXUPCOPY_CALL(local_flush_cache_page, flush_cache_page);
-	BTFIXUPCOPY_CALL(local_flush_tlb_all, flush_tlb_all);
-	BTFIXUPCOPY_CALL(local_flush_tlb_mm, flush_tlb_mm);
-	BTFIXUPCOPY_CALL(local_flush_tlb_range, flush_tlb_range);
-	BTFIXUPCOPY_CALL(local_flush_tlb_page, flush_tlb_page);
-	BTFIXUPCOPY_CALL(local_flush_page_to_ram, __flush_page_to_ram);
-	BTFIXUPCOPY_CALL(local_flush_sig_insns, flush_sig_insns);
-	BTFIXUPCOPY_CALL(local_flush_page_for_dma, flush_page_for_dma);
-
-	BTFIXUPSET_CALL(flush_cache_all, smp_flush_cache_all, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_cache_mm, smp_flush_cache_mm, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_cache_range, smp_flush_cache_range, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_cache_page, smp_flush_cache_page, BTFIXUPCALL_NORM);
-	if (sparc_cpu_model != sun4d &&
-	    sparc_cpu_model != sparc_leon) {
-		BTFIXUPSET_CALL(flush_tlb_all, smp_flush_tlb_all, BTFIXUPCALL_NORM);
-		BTFIXUPSET_CALL(flush_tlb_mm, smp_flush_tlb_mm, BTFIXUPCALL_NORM);
-		BTFIXUPSET_CALL(flush_tlb_range, smp_flush_tlb_range, BTFIXUPCALL_NORM);
-		BTFIXUPSET_CALL(flush_tlb_page, smp_flush_tlb_page, BTFIXUPCALL_NORM);
+	if (sparc_cpu_model == sun4d || sparc_cpu_model == sparc_leon) {
+		smp_cachetlb_ops.tlb_all = local_ops->tlb_all;
+		smp_cachetlb_ops.tlb_mm = local_ops->tlb_mm;
+		smp_cachetlb_ops.tlb_range = local_ops->tlb_range;
+		smp_cachetlb_ops.tlb_page = local_ops->tlb_page;
 	}
-	BTFIXUPSET_CALL(__flush_page_to_ram, smp_flush_page_to_ram, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_sig_insns, smp_flush_sig_insns, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_page_for_dma, smp_flush_page_for_dma, BTFIXUPCALL_NORM);
 
 	if (poke_srmmu == poke_viking) {
 		/* Avoid unnecessary cross calls. */
-		BTFIXUPCOPY_CALL(flush_cache_all, local_flush_cache_all);
-		BTFIXUPCOPY_CALL(flush_cache_mm, local_flush_cache_mm);
-		BTFIXUPCOPY_CALL(flush_cache_range, local_flush_cache_range);
-		BTFIXUPCOPY_CALL(flush_cache_page, local_flush_cache_page);
-		BTFIXUPCOPY_CALL(__flush_page_to_ram, local_flush_page_to_ram);
-		BTFIXUPCOPY_CALL(flush_sig_insns, local_flush_sig_insns);
-		BTFIXUPCOPY_CALL(flush_page_for_dma, local_flush_page_for_dma);
+		smp_cachetlb_ops.cache_all = local_ops->cache_all;
+		smp_cachetlb_ops.cache_mm = local_ops->cache_mm;
+		smp_cachetlb_ops.cache_range = local_ops->cache_range;
+		smp_cachetlb_ops.cache_page = local_ops->cache_page;
+
+		smp_cachetlb_ops.page_to_ram = local_ops->page_to_ram;
+		smp_cachetlb_ops.sig_insns = local_ops->sig_insns;
+		smp_cachetlb_ops.page_for_dma = local_ops->page_for_dma;
 	}
+
+	/* It really is const after this point. */
+	sparc32_cachetlb_ops = (const struct sparc32_cachetlb_ops *)
+		&smp_cachetlb_ops;
 #endif
 
 	if (sparc_cpu_model == sun4d)
diff --git a/arch/sparc/mm/srmmu.h b/arch/sparc/mm/srmmu.h
new file mode 100644
index 000000000000..5703274ccf89
--- /dev/null
+++ b/arch/sparc/mm/srmmu.h
@@ -0,0 +1,4 @@
+/* srmmu.c */
+extern char *srmmu_name;
+
+extern void (*poke_srmmu)(void);
diff --git a/arch/sparc/mm/sun4c.c b/arch/sparc/mm/sun4c.c
deleted file mode 100644
index 1cf4f198709a..000000000000
--- a/arch/sparc/mm/sun4c.c
+++ /dev/null
@@ -1,2166 +0,0 @@
-/* sun4c.c: Doing in software what should be done in hardware.
- *
- * Copyright (C) 1996 David S. Miller (davem@davemloft.net)
- * Copyright (C) 1996 Eddie C. Dost (ecd@skynet.be)
- * Copyright (C) 1996 Andrew Tridgell (Andrew.Tridgell@anu.edu.au)
- * Copyright (C) 1997-2000 Anton Blanchard (anton@samba.org)
- * Copyright (C) 1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
- */
-
-#define NR_TASK_BUCKETS 512
-
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/bootmem.h>
-#include <linux/highmem.h>
-#include <linux/fs.h>
-#include <linux/seq_file.h>
-#include <linux/scatterlist.h>
-#include <linux/bitmap.h>
-
-#include <asm/sections.h>
-#include <asm/page.h>
-#include <asm/pgalloc.h>
-#include <asm/pgtable.h>
-#include <asm/vaddrs.h>
-#include <asm/idprom.h>
-#include <asm/machines.h>
-#include <asm/memreg.h>
-#include <asm/processor.h>
-#include <asm/auxio.h>
-#include <asm/io.h>
-#include <asm/oplib.h>
-#include <asm/openprom.h>
-#include <asm/mmu_context.h>
-#include <asm/highmem.h>
-#include <asm/btfixup.h>
-#include <asm/cacheflush.h>
-#include <asm/tlbflush.h>
-
-/* Because of our dynamic kernel TLB miss strategy, and how
- * our DVMA mapping allocation works, you _MUST_:
- *
- * 1) Disable interrupts _and_ not touch any dynamic kernel
- *    memory while messing with kernel MMU state.  By
- *    dynamic memory I mean any object which is not in
- *    the kernel image itself or a thread_union (both of
- *    which are locked into the MMU).
- * 2) Disable interrupts while messing with user MMU state.
- */
-
-extern int num_segmaps, num_contexts;
-
-extern unsigned long page_kernel;
-
-/* That's it, we prom_halt() on sun4c if the cache size is something other than 65536.
- * So let's save some cycles and just use that everywhere except for that bootup
- * sanity check.
- */
-#define SUN4C_VAC_SIZE 65536
-
-#define SUN4C_KERNEL_BUCKETS 32
-
-/* Flushing the cache. */
-struct sun4c_vac_props sun4c_vacinfo;
-unsigned long sun4c_kernel_faults;
-
-/* Invalidate every sun4c cache line tag. */
-static void __init sun4c_flush_all(void)
-{
-	unsigned long begin, end;
-
-	if (sun4c_vacinfo.on)
-		panic("SUN4C: AIEEE, trying to invalidate vac while it is on.");
-
-	/* Clear 'valid' bit in all cache line tags */
-	begin = AC_CACHETAGS;
-	end = (AC_CACHETAGS + SUN4C_VAC_SIZE);
-	while (begin < end) {
-		__asm__ __volatile__("sta %%g0, [%0] %1\n\t" : :
-				     "r" (begin), "i" (ASI_CONTROL));
-		begin += sun4c_vacinfo.linesize;
-	}
-}
-
-static void sun4c_flush_context_hw(void)
-{
-	unsigned long end = SUN4C_VAC_SIZE;
-
-	__asm__ __volatile__(
-		"1:	addcc	%0, -4096, %0\n\t"
-		"	bne	1b\n\t"
-		"	 sta	%%g0, [%0] %2"
-	: "=&r" (end)
-	: "0" (end), "i" (ASI_HWFLUSHCONTEXT)
-	: "cc");
-}
-
-/* Must be called minimally with IRQs disabled. */
-static void sun4c_flush_segment_hw(unsigned long addr)
-{
-	if (sun4c_get_segmap(addr) != invalid_segment) {
-		unsigned long vac_size = SUN4C_VAC_SIZE;
-
-		__asm__ __volatile__(
-			"1:	addcc	%0, -4096, %0\n\t"
-			"	bne	1b\n\t"
-			"	 sta	%%g0, [%2 + %0] %3"
-			: "=&r" (vac_size)
-			: "0" (vac_size), "r" (addr), "i" (ASI_HWFLUSHSEG)
-			: "cc");
-	}
-}
-
-/* File local boot time fixups. */
-BTFIXUPDEF_CALL(void, sun4c_flush_page, unsigned long)
-BTFIXUPDEF_CALL(void, sun4c_flush_segment, unsigned long)
-BTFIXUPDEF_CALL(void, sun4c_flush_context, void)
-
-#define sun4c_flush_page(addr) BTFIXUP_CALL(sun4c_flush_page)(addr)
-#define sun4c_flush_segment(addr) BTFIXUP_CALL(sun4c_flush_segment)(addr)
-#define sun4c_flush_context() BTFIXUP_CALL(sun4c_flush_context)()
-
-/* Must be called minimally with interrupts disabled. */
-static void sun4c_flush_page_hw(unsigned long addr)
-{
-	addr &= PAGE_MASK;
-	if ((int)sun4c_get_pte(addr) < 0)
-		__asm__ __volatile__("sta %%g0, [%0] %1"
-				     : : "r" (addr), "i" (ASI_HWFLUSHPAGE));
-}
-
-/* Don't inline the software version as it eats too many cache lines if expanded. */
-static void sun4c_flush_context_sw(void)
-{
-	unsigned long nbytes = SUN4C_VAC_SIZE;
-	unsigned long lsize = sun4c_vacinfo.linesize;
-
-	__asm__ __volatile__(
-	"add	%2, %2, %%g1\n\t"
-	"add	%2, %%g1, %%g2\n\t"
-	"add	%2, %%g2, %%g3\n\t"
-	"add	%2, %%g3, %%g4\n\t"
-	"add	%2, %%g4, %%g5\n\t"
-	"add	%2, %%g5, %%o4\n\t"
-	"add	%2, %%o4, %%o5\n"
-	"1:\n\t"
-	"subcc	%0, %%o5, %0\n\t"
-	"sta	%%g0, [%0] %3\n\t"
-	"sta	%%g0, [%0 + %2] %3\n\t"
-	"sta	%%g0, [%0 + %%g1] %3\n\t"
-	"sta	%%g0, [%0 + %%g2] %3\n\t"
-	"sta	%%g0, [%0 + %%g3] %3\n\t"
-	"sta	%%g0, [%0 + %%g4] %3\n\t"
-	"sta	%%g0, [%0 + %%g5] %3\n\t"
-	"bg	1b\n\t"
-	" sta	%%g0, [%1 + %%o4] %3\n"
-	: "=&r" (nbytes)
-	: "0" (nbytes), "r" (lsize), "i" (ASI_FLUSHCTX)
-	: "g1", "g2", "g3", "g4", "g5", "o4", "o5", "cc");
-}
-
-/* Don't inline the software version as it eats too many cache lines if expanded. */
-static void sun4c_flush_segment_sw(unsigned long addr)
-{
-	if (sun4c_get_segmap(addr) != invalid_segment) {
-		unsigned long nbytes = SUN4C_VAC_SIZE;
-		unsigned long lsize = sun4c_vacinfo.linesize;
-
-		__asm__ __volatile__(
-		"add	%2, %2, %%g1\n\t"
-		"add	%2, %%g1, %%g2\n\t"
-		"add	%2, %%g2, %%g3\n\t"
-		"add	%2, %%g3, %%g4\n\t"
-		"add	%2, %%g4, %%g5\n\t"
-		"add	%2, %%g5, %%o4\n\t"
-		"add	%2, %%o4, %%o5\n"
-		"1:\n\t"
-		"subcc	%1, %%o5, %1\n\t"
-		"sta	%%g0, [%0] %6\n\t"
-		"sta	%%g0, [%0 + %2] %6\n\t"
-		"sta	%%g0, [%0 + %%g1] %6\n\t"
-		"sta	%%g0, [%0 + %%g2] %6\n\t"
-		"sta	%%g0, [%0 + %%g3] %6\n\t"
-		"sta	%%g0, [%0 + %%g4] %6\n\t"
-		"sta	%%g0, [%0 + %%g5] %6\n\t"
-		"sta	%%g0, [%0 + %%o4] %6\n\t"
-		"bg	1b\n\t"
-		" add	%0, %%o5, %0\n"
-		: "=&r" (addr), "=&r" (nbytes), "=&r" (lsize)
-		: "0" (addr), "1" (nbytes), "2" (lsize),
-		  "i" (ASI_FLUSHSEG)
-		: "g1", "g2", "g3", "g4", "g5", "o4", "o5", "cc");
-	}
-}
-
-/* Don't inline the software version as it eats too many cache lines if expanded. */
-static void sun4c_flush_page_sw(unsigned long addr)
-{
-	addr &= PAGE_MASK;
-	if ((sun4c_get_pte(addr) & (_SUN4C_PAGE_NOCACHE | _SUN4C_PAGE_VALID)) ==
-	    _SUN4C_PAGE_VALID) {
-		unsigned long left = PAGE_SIZE;
-		unsigned long lsize = sun4c_vacinfo.linesize;
-
-		__asm__ __volatile__(
-		"add	%2, %2, %%g1\n\t"
-		"add	%2, %%g1, %%g2\n\t"
-		"add	%2, %%g2, %%g3\n\t"
-		"add	%2, %%g3, %%g4\n\t"
-		"add	%2, %%g4, %%g5\n\t"
-		"add	%2, %%g5, %%o4\n\t"
-		"add	%2, %%o4, %%o5\n"
-		"1:\n\t"
-		"subcc	%1, %%o5, %1\n\t"
-		"sta	%%g0, [%0] %6\n\t"
-		"sta	%%g0, [%0 + %2] %6\n\t"
-		"sta	%%g0, [%0 + %%g1] %6\n\t"
-		"sta	%%g0, [%0 + %%g2] %6\n\t"
-		"sta	%%g0, [%0 + %%g3] %6\n\t"
-		"sta	%%g0, [%0 + %%g4] %6\n\t"
-		"sta	%%g0, [%0 + %%g5] %6\n\t"
-		"sta	%%g0, [%0 + %%o4] %6\n\t"
-		"bg	1b\n\t"
-		" add	%0, %%o5, %0\n"
-		: "=&r" (addr), "=&r" (left), "=&r" (lsize)
-		: "0" (addr), "1" (left), "2" (lsize),
-		  "i" (ASI_FLUSHPG)
-		: "g1", "g2", "g3", "g4", "g5", "o4", "o5", "cc");
-	}
-}
-
-/* The sun4c's do have an on chip store buffer.  And the way you
- * clear them out isn't so obvious.  The only way I can think of
- * to accomplish this is to read the current context register,
- * store the same value there, then read an external hardware
- * register.
- */
-void sun4c_complete_all_stores(void)
-{
-	volatile int _unused;
-
-	_unused = sun4c_get_context();
-	sun4c_set_context(_unused);
-	_unused = get_auxio();
-}
-
-/* Bootup utility functions. */
-static inline void sun4c_init_clean_segmap(unsigned char pseg)
-{
-	unsigned long vaddr;
-
-	sun4c_put_segmap(0, pseg);
-	for (vaddr = 0; vaddr < SUN4C_REAL_PGDIR_SIZE; vaddr += PAGE_SIZE)
-		sun4c_put_pte(vaddr, 0);
-	sun4c_put_segmap(0, invalid_segment);
-}
-
-static inline void sun4c_init_clean_mmu(unsigned long kernel_end)
-{
-	unsigned long vaddr;
-	unsigned char savectx, ctx;
-
-	savectx = sun4c_get_context();
-	for (ctx = 0; ctx < num_contexts; ctx++) {
-		sun4c_set_context(ctx);
-		for (vaddr = 0; vaddr < 0x20000000; vaddr += SUN4C_REAL_PGDIR_SIZE)
-			sun4c_put_segmap(vaddr, invalid_segment);
-		for (vaddr = 0xe0000000; vaddr < KERNBASE; vaddr += SUN4C_REAL_PGDIR_SIZE)
-			sun4c_put_segmap(vaddr, invalid_segment);
-		for (vaddr = kernel_end; vaddr < KADB_DEBUGGER_BEGVM; vaddr += SUN4C_REAL_PGDIR_SIZE)
-			sun4c_put_segmap(vaddr, invalid_segment);
-		for (vaddr = LINUX_OPPROM_ENDVM; vaddr; vaddr += SUN4C_REAL_PGDIR_SIZE)
-			sun4c_put_segmap(vaddr, invalid_segment);
-	}
-	sun4c_set_context(savectx);
-}
-
-void __init sun4c_probe_vac(void)
-{
-	sun4c_disable_vac();
-
-	if ((idprom->id_machtype == (SM_SUN4C | SM_4C_SS1)) ||
-	    (idprom->id_machtype == (SM_SUN4C | SM_4C_SS1PLUS))) {
-		/* PROM on SS1 lacks this info, to be super safe we
-		 * hard code it here since this arch is cast in stone.
-		 */
-		sun4c_vacinfo.num_bytes = 65536;
-		sun4c_vacinfo.linesize = 16;
-	} else {
-		sun4c_vacinfo.num_bytes =
-		 prom_getintdefault(prom_root_node, "vac-size", 65536);
-		sun4c_vacinfo.linesize =
-		 prom_getintdefault(prom_root_node, "vac-linesize", 16);
-	}
-	sun4c_vacinfo.do_hwflushes =
-	 prom_getintdefault(prom_root_node, "vac-hwflush", 0);
-
-	if (sun4c_vacinfo.do_hwflushes == 0)
-		sun4c_vacinfo.do_hwflushes =
-		 prom_getintdefault(prom_root_node, "vac_hwflush", 0);
-
-	if (sun4c_vacinfo.num_bytes != 65536) {
-		prom_printf("WEIRD Sun4C VAC cache size, "
-			    "tell sparclinux@vger.kernel.org");
-		prom_halt();
-	}
-
-	switch (sun4c_vacinfo.linesize) {
-	case 16:
-		sun4c_vacinfo.log2lsize = 4;
-		break;
-	case 32:
-		sun4c_vacinfo.log2lsize = 5;
-		break;
-	default:
-		prom_printf("probe_vac: Didn't expect vac-linesize of %d, halting\n",
-			    sun4c_vacinfo.linesize);
-		prom_halt();
-	}
-
-	sun4c_flush_all();
-	sun4c_enable_vac();
-}
-
-/* Patch instructions for the low level kernel fault handler. */
-extern unsigned long invalid_segment_patch1, invalid_segment_patch1_ff;
-extern unsigned long invalid_segment_patch2, invalid_segment_patch2_ff;
-extern unsigned long invalid_segment_patch1_1ff, invalid_segment_patch2_1ff;
-extern unsigned long num_context_patch1, num_context_patch1_16;
-extern unsigned long num_context_patch2_16;
-extern unsigned long vac_linesize_patch, vac_linesize_patch_32;
-extern unsigned long vac_hwflush_patch1, vac_hwflush_patch1_on;
-extern unsigned long vac_hwflush_patch2, vac_hwflush_patch2_on;
-
-#define PATCH_INSN(src, dst) do {	\
-		daddr = &(dst);		\
-		iaddr = &(src);		\
-		*daddr = *iaddr;	\
-	} while (0)
-
-static void __init patch_kernel_fault_handler(void)
-{
-	unsigned long *iaddr, *daddr;
-
-	switch (num_segmaps) {
-		case 128:
-			/* Default, nothing to do. */
-			break;
-		case 256:
-			PATCH_INSN(invalid_segment_patch1_ff,
-				   invalid_segment_patch1);
-			PATCH_INSN(invalid_segment_patch2_ff,
-				   invalid_segment_patch2);
-			break;
-		case 512:
-			PATCH_INSN(invalid_segment_patch1_1ff,
-				   invalid_segment_patch1);
-			PATCH_INSN(invalid_segment_patch2_1ff,
-				   invalid_segment_patch2);
-			break;
-		default:
-			prom_printf("Unhandled number of segmaps: %d\n",
-				    num_segmaps);
-			prom_halt();
-	}
-	switch (num_contexts) {
-		case 8:
-			/* Default, nothing to do. */
-			break;
-		case 16:
-			PATCH_INSN(num_context_patch1_16,
-				   num_context_patch1);
-			break;
-		default:
-			prom_printf("Unhandled number of contexts: %d\n",
-				    num_contexts);
-			prom_halt();
-	}
-
-	if (sun4c_vacinfo.do_hwflushes != 0) {
-		PATCH_INSN(vac_hwflush_patch1_on, vac_hwflush_patch1);
-		PATCH_INSN(vac_hwflush_patch2_on, vac_hwflush_patch2);
-	} else {
-		switch (sun4c_vacinfo.linesize) {
-		case 16:
-			/* Default, nothing to do. */
-			break;
-		case 32:
-			PATCH_INSN(vac_linesize_patch_32, vac_linesize_patch);
-			break;
-		default:
-			prom_printf("Impossible VAC linesize %d, halting...\n",
-				    sun4c_vacinfo.linesize);
-			prom_halt();
-		}
-	}
-}
-
-static void __init sun4c_probe_mmu(void)
-{
-	if ((idprom->id_machtype == (SM_SUN4C | SM_4C_SS1)) ||
-	    (idprom->id_machtype == (SM_SUN4C | SM_4C_SS1PLUS))) {
-		/* Hardcode these just to be safe, PROM on SS1 does
-		* not have this info available in the root node.
-		*/
-		num_segmaps = 128;
-		num_contexts = 8;
-	} else {
-		num_segmaps =
-		    prom_getintdefault(prom_root_node, "mmu-npmg", 128);
-		num_contexts =
-		    prom_getintdefault(prom_root_node, "mmu-nctx", 0x8);
-	}
-	patch_kernel_fault_handler();
-}
-
-volatile unsigned long __iomem *sun4c_memerr_reg = NULL;
-
-void __init sun4c_probe_memerr_reg(void)
-{
-	phandle node;
-	struct linux_prom_registers regs[1];
-
-	node = prom_getchild(prom_root_node);
-	node = prom_searchsiblings(prom_root_node, "memory-error");
-	if (!node)
-		return;
-	if (prom_getproperty(node, "reg", (char *)regs, sizeof(regs)) <= 0)
-		return;
-	/* hmm I think regs[0].which_io is zero here anyways */
-	sun4c_memerr_reg = ioremap(regs[0].phys_addr, regs[0].reg_size);
-}
-
-static inline void sun4c_init_ss2_cache_bug(void)
-{
-	if ((idprom->id_machtype == (SM_SUN4C | SM_4C_SS2)) ||
-	    (idprom->id_machtype == (SM_SUN4C | SM_4C_IPX)) ||
-	    (idprom->id_machtype == (SM_SUN4C | SM_4C_ELC))) {
-		/* Whee.. */
-		printk("SS2 cache bug detected, uncaching trap table page\n");
-		sun4c_flush_page((unsigned int) &_start);
-		sun4c_put_pte(((unsigned long) &_start),
-			(sun4c_get_pte((unsigned long) &_start) | _SUN4C_PAGE_NOCACHE));
-	}
-}
-
-/* Addr is always aligned on a page boundary for us already. */
-static int sun4c_map_dma_area(struct device *dev, dma_addr_t *pba, unsigned long va,
-			      unsigned long addr, int len)
-{
-	unsigned long page, end;
-
-	*pba = addr;
-
-	end = PAGE_ALIGN((addr + len));
-	while (addr < end) {
-		page = va;
-		sun4c_flush_page(page);
-		page -= PAGE_OFFSET;
-		page >>= PAGE_SHIFT;
-		page |= (_SUN4C_PAGE_VALID | _SUN4C_PAGE_DIRTY |
-			 _SUN4C_PAGE_NOCACHE | _SUN4C_PAGE_PRIV);
-		sun4c_put_pte(addr, page);
-		addr += PAGE_SIZE;
-		va += PAGE_SIZE;
-	}
-
-	return 0;
-}
-
-static void sun4c_unmap_dma_area(struct device *dev, unsigned long busa, int len)
-{
-	/* Fortunately for us, bus_addr == uncached_virt in sun4c. */
-	/* XXX Implement this */
-}
-
-/* TLB management. */
-
-/* Don't change this struct without changing entry.S. This is used
- * in the in-window kernel fault handler, and you don't want to mess
- * with that. (See sun4c_fault in entry.S).
- */
-struct sun4c_mmu_entry {
-	struct sun4c_mmu_entry *next;
-	struct sun4c_mmu_entry *prev;
-	unsigned long vaddr;
-	unsigned char pseg;
-	unsigned char locked;
-
-	/* For user mappings only, and completely hidden from kernel
-	 * TLB miss code.
-	 */
-	unsigned char ctx;
-	struct sun4c_mmu_entry *lru_next;
-	struct sun4c_mmu_entry *lru_prev;
-};
-
-static struct sun4c_mmu_entry mmu_entry_pool[SUN4C_MAX_SEGMAPS];
-
-static void __init sun4c_init_mmu_entry_pool(void)
-{
-	int i;
-
-	for (i=0; i < SUN4C_MAX_SEGMAPS; i++) {
-		mmu_entry_pool[i].pseg = i;
-		mmu_entry_pool[i].next = NULL;
-		mmu_entry_pool[i].prev = NULL;
-		mmu_entry_pool[i].vaddr = 0;
-		mmu_entry_pool[i].locked = 0;
-		mmu_entry_pool[i].ctx = 0;
-		mmu_entry_pool[i].lru_next = NULL;
-		mmu_entry_pool[i].lru_prev = NULL;
-	}
-	mmu_entry_pool[invalid_segment].locked = 1;
-}
-
-static inline void fix_permissions(unsigned long vaddr, unsigned long bits_on,
-				   unsigned long bits_off)
-{
-	unsigned long start, end;
-
-	end = vaddr + SUN4C_REAL_PGDIR_SIZE;
-	for (start = vaddr; start < end; start += PAGE_SIZE)
-		if (sun4c_get_pte(start) & _SUN4C_PAGE_VALID)
-			sun4c_put_pte(start, (sun4c_get_pte(start) | bits_on) &
-				      ~bits_off);
-}
-
-static inline void sun4c_init_map_kernelprom(unsigned long kernel_end)
-{
-	unsigned long vaddr;
-	unsigned char pseg, ctx;
-
-	for (vaddr = KADB_DEBUGGER_BEGVM;
-	     vaddr < LINUX_OPPROM_ENDVM;
-	     vaddr += SUN4C_REAL_PGDIR_SIZE) {
-		pseg = sun4c_get_segmap(vaddr);
-		if (pseg != invalid_segment) {
-			mmu_entry_pool[pseg].locked = 1;
-			for (ctx = 0; ctx < num_contexts; ctx++)
-				prom_putsegment(ctx, vaddr, pseg);
-			fix_permissions(vaddr, _SUN4C_PAGE_PRIV, 0);
-		}
-	}
-
-	for (vaddr = KERNBASE; vaddr < kernel_end; vaddr += SUN4C_REAL_PGDIR_SIZE) {
-		pseg = sun4c_get_segmap(vaddr);
-		mmu_entry_pool[pseg].locked = 1;
-		for (ctx = 0; ctx < num_contexts; ctx++)
-			prom_putsegment(ctx, vaddr, pseg);
-		fix_permissions(vaddr, _SUN4C_PAGE_PRIV, _SUN4C_PAGE_NOCACHE);
-	}
-}
-
-static void __init sun4c_init_lock_area(unsigned long start, unsigned long end)
-{
-	int i, ctx;
-
-	while (start < end) {
-		for (i = 0; i < invalid_segment; i++)
-			if (!mmu_entry_pool[i].locked)
-				break;
-		mmu_entry_pool[i].locked = 1;
-		sun4c_init_clean_segmap(i);
-		for (ctx = 0; ctx < num_contexts; ctx++)
-			prom_putsegment(ctx, start, mmu_entry_pool[i].pseg);
-		start += SUN4C_REAL_PGDIR_SIZE;
-	}
-}
-
-/* Don't change this struct without changing entry.S. This is used
- * in the in-window kernel fault handler, and you don't want to mess
- * with that. (See sun4c_fault in entry.S).
- */
-struct sun4c_mmu_ring {
-	struct sun4c_mmu_entry ringhd;
-	int num_entries;
-};
-
-static struct sun4c_mmu_ring sun4c_context_ring[SUN4C_MAX_CONTEXTS]; /* used user entries */
-static struct sun4c_mmu_ring sun4c_ufree_ring;       /* free user entries */
-static struct sun4c_mmu_ring sun4c_ulru_ring;	     /* LRU user entries */
-struct sun4c_mmu_ring sun4c_kernel_ring;      /* used kernel entries */
-struct sun4c_mmu_ring sun4c_kfree_ring;       /* free kernel entries */
-
-static inline void sun4c_init_rings(void)
-{
-	int i;
-
-	for (i = 0; i < SUN4C_MAX_CONTEXTS; i++) {
-		sun4c_context_ring[i].ringhd.next =
-			sun4c_context_ring[i].ringhd.prev =
-			&sun4c_context_ring[i].ringhd;
-		sun4c_context_ring[i].num_entries = 0;
-	}
-	sun4c_ufree_ring.ringhd.next = sun4c_ufree_ring.ringhd.prev =
-		&sun4c_ufree_ring.ringhd;
-	sun4c_ufree_ring.num_entries = 0;
-	sun4c_ulru_ring.ringhd.lru_next = sun4c_ulru_ring.ringhd.lru_prev =
-		&sun4c_ulru_ring.ringhd;
-	sun4c_ulru_ring.num_entries = 0;
-	sun4c_kernel_ring.ringhd.next = sun4c_kernel_ring.ringhd.prev =
-		&sun4c_kernel_ring.ringhd;
-	sun4c_kernel_ring.num_entries = 0;
-	sun4c_kfree_ring.ringhd.next = sun4c_kfree_ring.ringhd.prev =
-		&sun4c_kfree_ring.ringhd;
-	sun4c_kfree_ring.num_entries = 0;
-}
-
-static void add_ring(struct sun4c_mmu_ring *ring,
-		     struct sun4c_mmu_entry *entry)
-{
-	struct sun4c_mmu_entry *head = &ring->ringhd;
-
-	entry->prev = head;
-	(entry->next = head->next)->prev = entry;
-	head->next = entry;
-	ring->num_entries++;
-}
-
-static inline void add_lru(struct sun4c_mmu_entry *entry)
-{
-	struct sun4c_mmu_ring *ring = &sun4c_ulru_ring;
-	struct sun4c_mmu_entry *head = &ring->ringhd;
-
-	entry->lru_next = head;
-	(entry->lru_prev = head->lru_prev)->lru_next = entry;
-	head->lru_prev = entry;
-}
-
-static void add_ring_ordered(struct sun4c_mmu_ring *ring,
-			     struct sun4c_mmu_entry *entry)
-{
-	struct sun4c_mmu_entry *head = &ring->ringhd;
-	unsigned long addr = entry->vaddr;
-
-	while ((head->next != &ring->ringhd) && (head->next->vaddr < addr))
-		head = head->next;
-
-	entry->prev = head;
-	(entry->next = head->next)->prev = entry;
-	head->next = entry;
-	ring->num_entries++;
-
-	add_lru(entry);
-}
-
-static inline void remove_ring(struct sun4c_mmu_ring *ring,
-				   struct sun4c_mmu_entry *entry)
-{
-	struct sun4c_mmu_entry *next = entry->next;
-
-	(next->prev = entry->prev)->next = next;
-	ring->num_entries--;
-}
-
-static void remove_lru(struct sun4c_mmu_entry *entry)
-{
-	struct sun4c_mmu_entry *next = entry->lru_next;
-
-	(next->lru_prev = entry->lru_prev)->lru_next = next;
-}
-
-static void free_user_entry(int ctx, struct sun4c_mmu_entry *entry)
-{
-        remove_ring(sun4c_context_ring+ctx, entry);
-	remove_lru(entry);
-        add_ring(&sun4c_ufree_ring, entry);
-}
-
-static void free_kernel_entry(struct sun4c_mmu_entry *entry,
-			      struct sun4c_mmu_ring *ring)
-{
-        remove_ring(ring, entry);
-        add_ring(&sun4c_kfree_ring, entry);
-}
-
-static void __init sun4c_init_fill_kernel_ring(int howmany)
-{
-	int i;
-
-	while (howmany) {
-		for (i = 0; i < invalid_segment; i++)
-			if (!mmu_entry_pool[i].locked)
-				break;
-		mmu_entry_pool[i].locked = 1;
-		sun4c_init_clean_segmap(i);
-		add_ring(&sun4c_kfree_ring, &mmu_entry_pool[i]);
-		howmany--;
-	}
-}
-
-static void __init sun4c_init_fill_user_ring(void)
-{
-	int i;
-
-	for (i = 0; i < invalid_segment; i++) {
-		if (mmu_entry_pool[i].locked)
-			continue;
-		sun4c_init_clean_segmap(i);
-		add_ring(&sun4c_ufree_ring, &mmu_entry_pool[i]);
-	}
-}
-
-static void sun4c_kernel_unmap(struct sun4c_mmu_entry *kentry)
-{
-	int savectx, ctx;
-
-	savectx = sun4c_get_context();
-	for (ctx = 0; ctx < num_contexts; ctx++) {
-		sun4c_set_context(ctx);
-		sun4c_put_segmap(kentry->vaddr, invalid_segment);
-	}
-	sun4c_set_context(savectx);
-}
-
-static void sun4c_kernel_map(struct sun4c_mmu_entry *kentry)
-{
-	int savectx, ctx;
-
-	savectx = sun4c_get_context();
-	for (ctx = 0; ctx < num_contexts; ctx++) {
-		sun4c_set_context(ctx);
-		sun4c_put_segmap(kentry->vaddr, kentry->pseg);
-	}
-	sun4c_set_context(savectx);
-}
-
-#define sun4c_user_unmap(__entry) \
-	sun4c_put_segmap((__entry)->vaddr, invalid_segment)
-
-static void sun4c_demap_context(struct sun4c_mmu_ring *crp, unsigned char ctx)
-{
-	struct sun4c_mmu_entry *head = &crp->ringhd;
-	unsigned long flags;
-
-	local_irq_save(flags);
-	if (head->next != head) {
-		struct sun4c_mmu_entry *entry = head->next;
-		int savectx = sun4c_get_context();
-
-		flush_user_windows();
-		sun4c_set_context(ctx);
-		sun4c_flush_context();
-		do {
-			struct sun4c_mmu_entry *next = entry->next;
-
-			sun4c_user_unmap(entry);
-			free_user_entry(ctx, entry);
-
-			entry = next;
-		} while (entry != head);
-		sun4c_set_context(savectx);
-	}
-	local_irq_restore(flags);
-}
-
-static int sun4c_user_taken_entries;  /* This is how much we have.             */
-static int max_user_taken_entries;    /* This limits us and prevents deadlock. */
-
-static struct sun4c_mmu_entry *sun4c_kernel_strategy(void)
-{
-	struct sun4c_mmu_entry *this_entry;
-
-	/* If some are free, return first one. */
-	if (sun4c_kfree_ring.num_entries) {
-		this_entry = sun4c_kfree_ring.ringhd.next;
-		return this_entry;
-	}
-
-	/* Else free one up. */
-	this_entry = sun4c_kernel_ring.ringhd.prev;
-	sun4c_flush_segment(this_entry->vaddr);
-	sun4c_kernel_unmap(this_entry);
-	free_kernel_entry(this_entry, &sun4c_kernel_ring);
-	this_entry = sun4c_kfree_ring.ringhd.next;
-
-	return this_entry;
-}
-
-/* Using this method to free up mmu entries eliminates a lot of
- * potential races since we have a kernel that incurs tlb
- * replacement faults.  There may be performance penalties.
- *
- * NOTE: Must be called with interrupts disabled.
- */
-static struct sun4c_mmu_entry *sun4c_user_strategy(void)
-{
-	struct sun4c_mmu_entry *entry;
-	unsigned char ctx;
-	int savectx;
-
-	/* If some are free, return first one. */
-	if (sun4c_ufree_ring.num_entries) {
-		entry = sun4c_ufree_ring.ringhd.next;
-		goto unlink_out;
-	}
-
-	if (sun4c_user_taken_entries) {
-		entry = sun4c_kernel_strategy();
-		sun4c_user_taken_entries--;
-		goto kunlink_out;
-	}
-
-	/* Grab from the beginning of the LRU list. */
-	entry = sun4c_ulru_ring.ringhd.lru_next;
-	ctx = entry->ctx;
-
-	savectx = sun4c_get_context();
-	flush_user_windows();
-	sun4c_set_context(ctx);
-	sun4c_flush_segment(entry->vaddr);
-	sun4c_user_unmap(entry);
-	remove_ring(sun4c_context_ring + ctx, entry);
-	remove_lru(entry);
-	sun4c_set_context(savectx);
-
-	return entry;
-
-unlink_out:
-	remove_ring(&sun4c_ufree_ring, entry);
-	return entry;
-kunlink_out:
-	remove_ring(&sun4c_kfree_ring, entry);
-	return entry;
-}
-
-/* NOTE: Must be called with interrupts disabled. */
-void sun4c_grow_kernel_ring(void)
-{
-	struct sun4c_mmu_entry *entry;
-
-	/* Prevent deadlock condition. */
-	if (sun4c_user_taken_entries >= max_user_taken_entries)
-		return;
-
-	if (sun4c_ufree_ring.num_entries) {
-		entry = sun4c_ufree_ring.ringhd.next;
-        	remove_ring(&sun4c_ufree_ring, entry);
-		add_ring(&sun4c_kfree_ring, entry);
-		sun4c_user_taken_entries++;
-	}
-}
-
-/* 2 page buckets for task struct and kernel stack allocation.
- *
- * TASK_STACK_BEGIN
- * bucket[0]
- * bucket[1]
- *   [ ... ]
- * bucket[NR_TASK_BUCKETS-1]
- * TASK_STACK_BEGIN + (sizeof(struct task_bucket) * NR_TASK_BUCKETS)
- *
- * Each slot looks like:
- *
- *  page 1 --  task struct + beginning of kernel stack
- *  page 2 --  rest of kernel stack
- */
-
-union task_union *sun4c_bucket[NR_TASK_BUCKETS];
-
-static int sun4c_lowbucket_avail;
-
-#define BUCKET_EMPTY     ((union task_union *) 0)
-#define BUCKET_SHIFT     (PAGE_SHIFT + 1)        /* log2(sizeof(struct task_bucket)) */
-#define BUCKET_SIZE      (1 << BUCKET_SHIFT)
-#define BUCKET_NUM(addr) ((((addr) - SUN4C_LOCK_VADDR) >> BUCKET_SHIFT))
-#define BUCKET_ADDR(num) (((num) << BUCKET_SHIFT) + SUN4C_LOCK_VADDR)
-#define BUCKET_PTE(page)       \
-        ((((page) - PAGE_OFFSET) >> PAGE_SHIFT) | pgprot_val(SUN4C_PAGE_KERNEL))
-#define BUCKET_PTE_PAGE(pte)   \
-        (PAGE_OFFSET + (((pte) & SUN4C_PFN_MASK) << PAGE_SHIFT))
-
-static void get_locked_segment(unsigned long addr)
-{
-	struct sun4c_mmu_entry *stolen;
-	unsigned long flags;
-
-	local_irq_save(flags);
-	addr &= SUN4C_REAL_PGDIR_MASK;
-	stolen = sun4c_user_strategy();
-	max_user_taken_entries--;
-	stolen->vaddr = addr;
-	flush_user_windows();
-	sun4c_kernel_map(stolen);
-	local_irq_restore(flags);
-}
-
-static void free_locked_segment(unsigned long addr)
-{
-	struct sun4c_mmu_entry *entry;
-	unsigned long flags;
-	unsigned char pseg;
-
-	local_irq_save(flags);
-	addr &= SUN4C_REAL_PGDIR_MASK;
-	pseg = sun4c_get_segmap(addr);
-	entry = &mmu_entry_pool[pseg];
-
-	flush_user_windows();
-	sun4c_flush_segment(addr);
-	sun4c_kernel_unmap(entry);
-	add_ring(&sun4c_ufree_ring, entry);
-	max_user_taken_entries++;
-	local_irq_restore(flags);
-}
-
-static inline void garbage_collect(int entry)
-{
-	int start, end;
-
-	/* 32 buckets per segment... */
-	entry &= ~31;
-	start = entry;
-	for (end = (start + 32); start < end; start++)
-		if (sun4c_bucket[start] != BUCKET_EMPTY)
-			return;
-
-	/* Entire segment empty, release it. */
-	free_locked_segment(BUCKET_ADDR(entry));
-}
-
-static struct thread_info *sun4c_alloc_thread_info_node(int node)
-{
-	unsigned long addr, pages;
-	int entry;
-
-	pages = __get_free_pages(GFP_KERNEL, THREAD_INFO_ORDER);
-	if (!pages)
-		return NULL;
-
-	for (entry = sun4c_lowbucket_avail; entry < NR_TASK_BUCKETS; entry++)
-		if (sun4c_bucket[entry] == BUCKET_EMPTY)
-			break;
-	if (entry == NR_TASK_BUCKETS) {
-		free_pages(pages, THREAD_INFO_ORDER);
-		return NULL;
-	}
-	if (entry >= sun4c_lowbucket_avail)
-		sun4c_lowbucket_avail = entry + 1;
-
-	addr = BUCKET_ADDR(entry);
-	sun4c_bucket[entry] = (union task_union *) addr;
-	if(sun4c_get_segmap(addr) == invalid_segment)
-		get_locked_segment(addr);
-
-	/* We are changing the virtual color of the page(s)
-	 * so we must flush the cache to guarantee consistency.
-	 */
-	sun4c_flush_page(pages);
-	sun4c_flush_page(pages + PAGE_SIZE);
-
-	sun4c_put_pte(addr, BUCKET_PTE(pages));
-	sun4c_put_pte(addr + PAGE_SIZE, BUCKET_PTE(pages + PAGE_SIZE));
-
-#ifdef CONFIG_DEBUG_STACK_USAGE
-	memset((void *)addr, 0, PAGE_SIZE << THREAD_INFO_ORDER);
-#endif /* DEBUG_STACK_USAGE */
-
-	return (struct thread_info *) addr;
-}
-
-static void sun4c_free_thread_info(struct thread_info *ti)
-{
-	unsigned long tiaddr = (unsigned long) ti;
-	unsigned long pages = BUCKET_PTE_PAGE(sun4c_get_pte(tiaddr));
-	int entry = BUCKET_NUM(tiaddr);
-
-	/* We are deleting a mapping, so the flush here is mandatory. */
-	sun4c_flush_page(tiaddr);
-	sun4c_flush_page(tiaddr + PAGE_SIZE);
-
-	sun4c_put_pte(tiaddr, 0);
-	sun4c_put_pte(tiaddr + PAGE_SIZE, 0);
-
-	sun4c_bucket[entry] = BUCKET_EMPTY;
-	if (entry < sun4c_lowbucket_avail)
-		sun4c_lowbucket_avail = entry;
-
-	free_pages(pages, THREAD_INFO_ORDER);
-	garbage_collect(entry);
-}
-
-static void __init sun4c_init_buckets(void)
-{
-	int entry;
-
-	if (sizeof(union thread_union) != (PAGE_SIZE << THREAD_INFO_ORDER)) {
-		extern void thread_info_size_is_bolixed_pete(void);
-		thread_info_size_is_bolixed_pete();
-	}
-
-	for (entry = 0; entry < NR_TASK_BUCKETS; entry++)
-		sun4c_bucket[entry] = BUCKET_EMPTY;
-	sun4c_lowbucket_avail = 0;
-}
-
-static unsigned long sun4c_iobuffer_start;
-static unsigned long sun4c_iobuffer_end;
-static unsigned long sun4c_iobuffer_high;
-static unsigned long *sun4c_iobuffer_map;
-static int iobuffer_map_size;
-
-/*
- * Alias our pages so they do not cause a trap.
- * Also one page may be aliased into several I/O areas and we may
- * finish these I/O separately.
- */
-static char *sun4c_lockarea(char *vaddr, unsigned long size)
-{
-	unsigned long base, scan;
-	unsigned long npages;
-	unsigned long vpage;
-	unsigned long pte;
-	unsigned long apage;
-	unsigned long high;
-	unsigned long flags;
-
-	npages = (((unsigned long)vaddr & ~PAGE_MASK) +
-		  size + (PAGE_SIZE-1)) >> PAGE_SHIFT;
-
-	local_irq_save(flags);
-	base = bitmap_find_next_zero_area(sun4c_iobuffer_map, iobuffer_map_size,
-						0, npages, 0);
-	if (base >= iobuffer_map_size)
-		goto abend;
-
-	high = ((base + npages) << PAGE_SHIFT) + sun4c_iobuffer_start;
-	high = SUN4C_REAL_PGDIR_ALIGN(high);
-	while (high > sun4c_iobuffer_high) {
-		get_locked_segment(sun4c_iobuffer_high);
-		sun4c_iobuffer_high += SUN4C_REAL_PGDIR_SIZE;
-	}
-
-	vpage = ((unsigned long) vaddr) & PAGE_MASK;
-	for (scan = base; scan < base+npages; scan++) {
-		pte = ((vpage-PAGE_OFFSET) >> PAGE_SHIFT);
- 		pte |= pgprot_val(SUN4C_PAGE_KERNEL);
-		pte |= _SUN4C_PAGE_NOCACHE;
-		set_bit(scan, sun4c_iobuffer_map);
-		apage = (scan << PAGE_SHIFT) + sun4c_iobuffer_start;
-
-		/* Flush original mapping so we see the right things later. */
-		sun4c_flush_page(vpage);
-
-		sun4c_put_pte(apage, pte);
-		vpage += PAGE_SIZE;
-	}
-	local_irq_restore(flags);
-	return (char *) ((base << PAGE_SHIFT) + sun4c_iobuffer_start +
-			 (((unsigned long) vaddr) & ~PAGE_MASK));
-
-abend:
-	local_irq_restore(flags);
-	printk("DMA vaddr=0x%p size=%08lx\n", vaddr, size);
-	panic("Out of iobuffer table");
-	return NULL;
-}
-
-static void sun4c_unlockarea(char *vaddr, unsigned long size)
-{
-	unsigned long vpage, npages;
-	unsigned long flags;
-	int scan, high;
-
-	vpage = (unsigned long)vaddr & PAGE_MASK;
-	npages = (((unsigned long)vaddr & ~PAGE_MASK) +
-		  size + (PAGE_SIZE-1)) >> PAGE_SHIFT;
-
-	local_irq_save(flags);
-	while (npages != 0) {
-		--npages;
-
-		/* This mapping is marked non-cachable, no flush necessary. */
-		sun4c_put_pte(vpage, 0);
-		clear_bit((vpage - sun4c_iobuffer_start) >> PAGE_SHIFT,
-			  sun4c_iobuffer_map);
-		vpage += PAGE_SIZE;
-	}
-
-	/* garbage collect */
-	scan = (sun4c_iobuffer_high - sun4c_iobuffer_start) >> PAGE_SHIFT;
-	while (scan >= 0 && !sun4c_iobuffer_map[scan >> 5])
-		scan -= 32;
-	scan += 32;
-	high = sun4c_iobuffer_start + (scan << PAGE_SHIFT);
-	high = SUN4C_REAL_PGDIR_ALIGN(high) + SUN4C_REAL_PGDIR_SIZE;
-	while (high < sun4c_iobuffer_high) {
-		sun4c_iobuffer_high -= SUN4C_REAL_PGDIR_SIZE;
-		free_locked_segment(sun4c_iobuffer_high);
-	}
-	local_irq_restore(flags);
-}
-
-/* Note the scsi code at init time passes to here buffers
- * which sit on the kernel stack, those are already locked
- * by implication and fool the page locking code above
- * if passed to by mistake.
- */
-static __u32 sun4c_get_scsi_one(struct device *dev, char *bufptr, unsigned long len)
-{
-	unsigned long page;
-
-	page = ((unsigned long)bufptr) & PAGE_MASK;
-	if (!virt_addr_valid(page)) {
-		sun4c_flush_page(page);
-		return (__u32)bufptr; /* already locked */
-	}
-	return (__u32)sun4c_lockarea(bufptr, len);
-}
-
-static void sun4c_get_scsi_sgl(struct device *dev, struct scatterlist *sg, int sz)
-{
-	while (sz != 0) {
-		--sz;
-		sg->dma_address = (__u32)sun4c_lockarea(sg_virt(sg), sg->length);
-		sg->dma_length = sg->length;
-		sg = sg_next(sg);
-	}
-}
-
-static void sun4c_release_scsi_one(struct device *dev, __u32 bufptr, unsigned long len)
-{
-	if (bufptr < sun4c_iobuffer_start)
-		return; /* On kernel stack or similar, see above */
-	sun4c_unlockarea((char *)bufptr, len);
-}
-
-static void sun4c_release_scsi_sgl(struct device *dev, struct scatterlist *sg, int sz)
-{
-	while (sz != 0) {
-		--sz;
-		sun4c_unlockarea((char *)sg->dma_address, sg->length);
-		sg = sg_next(sg);
-	}
-}
-
-#define TASK_ENTRY_SIZE    BUCKET_SIZE /* see above */
-#define LONG_ALIGN(x) (((x)+(sizeof(long))-1)&~((sizeof(long))-1))
-
-struct vm_area_struct sun4c_kstack_vma;
-
-static void __init sun4c_init_lock_areas(void)
-{
-	unsigned long sun4c_taskstack_start;
-	unsigned long sun4c_taskstack_end;
-	int bitmap_size;
-
-	sun4c_init_buckets();
-	sun4c_taskstack_start = SUN4C_LOCK_VADDR;
-	sun4c_taskstack_end = (sun4c_taskstack_start +
-			       (TASK_ENTRY_SIZE * NR_TASK_BUCKETS));
-	if (sun4c_taskstack_end >= SUN4C_LOCK_END) {
-		prom_printf("Too many tasks, decrease NR_TASK_BUCKETS please.\n");
-		prom_halt();
-	}
-
-	sun4c_iobuffer_start = sun4c_iobuffer_high =
-				SUN4C_REAL_PGDIR_ALIGN(sun4c_taskstack_end);
-	sun4c_iobuffer_end = SUN4C_LOCK_END;
-	bitmap_size = (sun4c_iobuffer_end - sun4c_iobuffer_start) >> PAGE_SHIFT;
-	bitmap_size = (bitmap_size + 7) >> 3;
-	bitmap_size = LONG_ALIGN(bitmap_size);
-	iobuffer_map_size = bitmap_size << 3;
-	sun4c_iobuffer_map = __alloc_bootmem(bitmap_size, SMP_CACHE_BYTES, 0UL);
-	memset((void *) sun4c_iobuffer_map, 0, bitmap_size);
-
-	sun4c_kstack_vma.vm_mm = &init_mm;
-	sun4c_kstack_vma.vm_start = sun4c_taskstack_start;
-	sun4c_kstack_vma.vm_end = sun4c_taskstack_end;
-	sun4c_kstack_vma.vm_page_prot = PAGE_SHARED;
-	sun4c_kstack_vma.vm_flags = VM_READ | VM_WRITE | VM_EXEC;
-	insert_vm_struct(&init_mm, &sun4c_kstack_vma);
-}
-
-/* Cache flushing on the sun4c. */
-static void sun4c_flush_cache_all(void)
-{
-	unsigned long begin, end;
-
-	flush_user_windows();
-	begin = (KERNBASE + SUN4C_REAL_PGDIR_SIZE);
-	end = (begin + SUN4C_VAC_SIZE);
-
-	if (sun4c_vacinfo.linesize == 32) {
-		while (begin < end) {
-			__asm__ __volatile__(
-			"ld	[%0 + 0x00], %%g0\n\t"
-			"ld	[%0 + 0x20], %%g0\n\t"
-			"ld	[%0 + 0x40], %%g0\n\t"
-			"ld	[%0 + 0x60], %%g0\n\t"
-			"ld	[%0 + 0x80], %%g0\n\t"
-			"ld	[%0 + 0xa0], %%g0\n\t"
-			"ld	[%0 + 0xc0], %%g0\n\t"
-			"ld	[%0 + 0xe0], %%g0\n\t"
-			"ld	[%0 + 0x100], %%g0\n\t"
-			"ld	[%0 + 0x120], %%g0\n\t"
-			"ld	[%0 + 0x140], %%g0\n\t"
-			"ld	[%0 + 0x160], %%g0\n\t"
-			"ld	[%0 + 0x180], %%g0\n\t"
-			"ld	[%0 + 0x1a0], %%g0\n\t"
-			"ld	[%0 + 0x1c0], %%g0\n\t"
-			"ld	[%0 + 0x1e0], %%g0\n"
-			: : "r" (begin));
-			begin += 512;
-		}
-	} else {
-		while (begin < end) {
-			__asm__ __volatile__(
-			"ld	[%0 + 0x00], %%g0\n\t"
-			"ld	[%0 + 0x10], %%g0\n\t"
-			"ld	[%0 + 0x20], %%g0\n\t"
-			"ld	[%0 + 0x30], %%g0\n\t"
-			"ld	[%0 + 0x40], %%g0\n\t"
-			"ld	[%0 + 0x50], %%g0\n\t"
-			"ld	[%0 + 0x60], %%g0\n\t"
-			"ld	[%0 + 0x70], %%g0\n\t"
-			"ld	[%0 + 0x80], %%g0\n\t"
-			"ld	[%0 + 0x90], %%g0\n\t"
-			"ld	[%0 + 0xa0], %%g0\n\t"
-			"ld	[%0 + 0xb0], %%g0\n\t"
-			"ld	[%0 + 0xc0], %%g0\n\t"
-			"ld	[%0 + 0xd0], %%g0\n\t"
-			"ld	[%0 + 0xe0], %%g0\n\t"
-			"ld	[%0 + 0xf0], %%g0\n"
-			: : "r" (begin));
-			begin += 256;
-		}
-	}
-}
-
-static void sun4c_flush_cache_mm(struct mm_struct *mm)
-{
-	int new_ctx = mm->context;
-
-	if (new_ctx != NO_CONTEXT) {
-		flush_user_windows();
-
-		if (sun4c_context_ring[new_ctx].num_entries) {
-			struct sun4c_mmu_entry *head = &sun4c_context_ring[new_ctx].ringhd;
-			unsigned long flags;
-
-			local_irq_save(flags);
-			if (head->next != head) {
-				struct sun4c_mmu_entry *entry = head->next;
-				int savectx = sun4c_get_context();
-
-				sun4c_set_context(new_ctx);
-				sun4c_flush_context();
-				do {
-					struct sun4c_mmu_entry *next = entry->next;
-
-					sun4c_user_unmap(entry);
-					free_user_entry(new_ctx, entry);
-
-					entry = next;
-				} while (entry != head);
-				sun4c_set_context(savectx);
-			}
-			local_irq_restore(flags);
-		}
-	}
-}
-
-static void sun4c_flush_cache_range(struct vm_area_struct *vma, unsigned long start, unsigned long end)
-{
-	struct mm_struct *mm = vma->vm_mm;
-	int new_ctx = mm->context;
-
-	if (new_ctx != NO_CONTEXT) {
-		struct sun4c_mmu_entry *head = &sun4c_context_ring[new_ctx].ringhd;
-		struct sun4c_mmu_entry *entry;
-		unsigned long flags;
-
-		flush_user_windows();
-
-		local_irq_save(flags);
-		/* All user segmap chains are ordered on entry->vaddr. */
-		for (entry = head->next;
-		     (entry != head) && ((entry->vaddr+SUN4C_REAL_PGDIR_SIZE) < start);
-		     entry = entry->next)
-			;
-
-		/* Tracing various job mixtures showed that this conditional
-		 * only passes ~35% of the time for most worse case situations,
-		 * therefore we avoid all of this gross overhead ~65% of the time.
-		 */
-		if ((entry != head) && (entry->vaddr < end)) {
-			int octx = sun4c_get_context();
-			sun4c_set_context(new_ctx);
-
-			/* At this point, always, (start >= entry->vaddr) and
-			 * (entry->vaddr < end), once the latter condition
-			 * ceases to hold, or we hit the end of the list, we
-			 * exit the loop.  The ordering of all user allocated
-			 * segmaps makes this all work out so beautifully.
-			 */
-			do {
-				struct sun4c_mmu_entry *next = entry->next;
-				unsigned long realend;
-
-				/* "realstart" is always >= entry->vaddr */
-				realend = entry->vaddr + SUN4C_REAL_PGDIR_SIZE;
-				if (end < realend)
-					realend = end;
-				if ((realend - entry->vaddr) <= (PAGE_SIZE << 3)) {
-					unsigned long page = entry->vaddr;
-					while (page < realend) {
-						sun4c_flush_page(page);
-						page += PAGE_SIZE;
-					}
-				} else {
-					sun4c_flush_segment(entry->vaddr);
-					sun4c_user_unmap(entry);
-					free_user_entry(new_ctx, entry);
-				}
-				entry = next;
-			} while ((entry != head) && (entry->vaddr < end));
-			sun4c_set_context(octx);
-		}
-		local_irq_restore(flags);
-	}
-}
-
-static void sun4c_flush_cache_page(struct vm_area_struct *vma, unsigned long page)
-{
-	struct mm_struct *mm = vma->vm_mm;
-	int new_ctx = mm->context;
-
-	/* Sun4c has no separate I/D caches so cannot optimize for non
-	 * text page flushes.
-	 */
-	if (new_ctx != NO_CONTEXT) {
-		int octx = sun4c_get_context();
-		unsigned long flags;
-
-		flush_user_windows();
-		local_irq_save(flags);
-		sun4c_set_context(new_ctx);
-		sun4c_flush_page(page);
-		sun4c_set_context(octx);
-		local_irq_restore(flags);
-	}
-}
-
-static void sun4c_flush_page_to_ram(unsigned long page)
-{
-	unsigned long flags;
-
-	local_irq_save(flags);
-	sun4c_flush_page(page);
-	local_irq_restore(flags);
-}
-
-/* Sun4c cache is unified, both instructions and data live there, so
- * no need to flush the on-stack instructions for new signal handlers.
- */
-static void sun4c_flush_sig_insns(struct mm_struct *mm, unsigned long insn_addr)
-{
-}
-
-/* TLB flushing on the sun4c.  These routines count on the cache
- * flushing code to flush the user register windows so that we need
- * not do so when we get here.
- */
-
-static void sun4c_flush_tlb_all(void)
-{
-	struct sun4c_mmu_entry *this_entry, *next_entry;
-	unsigned long flags;
-	int savectx, ctx;
-
-	local_irq_save(flags);
-	this_entry = sun4c_kernel_ring.ringhd.next;
-	savectx = sun4c_get_context();
-	flush_user_windows();
-	while (sun4c_kernel_ring.num_entries) {
-		next_entry = this_entry->next;
-		sun4c_flush_segment(this_entry->vaddr);
-		for (ctx = 0; ctx < num_contexts; ctx++) {
-			sun4c_set_context(ctx);
-			sun4c_put_segmap(this_entry->vaddr, invalid_segment);
-		}
-		free_kernel_entry(this_entry, &sun4c_kernel_ring);
-		this_entry = next_entry;
-	}
-	sun4c_set_context(savectx);
-	local_irq_restore(flags);
-}
-
-static void sun4c_flush_tlb_mm(struct mm_struct *mm)
-{
-	int new_ctx = mm->context;
-
-	if (new_ctx != NO_CONTEXT) {
-		struct sun4c_mmu_entry *head = &sun4c_context_ring[new_ctx].ringhd;
-		unsigned long flags;
-
-		local_irq_save(flags);
-		if (head->next != head) {
-			struct sun4c_mmu_entry *entry = head->next;
-			int savectx = sun4c_get_context();
-
-			sun4c_set_context(new_ctx);
-			sun4c_flush_context();
-			do {
-				struct sun4c_mmu_entry *next = entry->next;
-
-				sun4c_user_unmap(entry);
-				free_user_entry(new_ctx, entry);
-
-				entry = next;
-			} while (entry != head);
-			sun4c_set_context(savectx);
-		}
-		local_irq_restore(flags);
-	}
-}
-
-static void sun4c_flush_tlb_range(struct vm_area_struct *vma, unsigned long start, unsigned long end)
-{
-	struct mm_struct *mm = vma->vm_mm;
-	int new_ctx = mm->context;
-
-	if (new_ctx != NO_CONTEXT) {
-		struct sun4c_mmu_entry *head = &sun4c_context_ring[new_ctx].ringhd;
-		struct sun4c_mmu_entry *entry;
-		unsigned long flags;
-
-		local_irq_save(flags);
-		/* See commentary in sun4c_flush_cache_range(). */
-		for (entry = head->next;
-		     (entry != head) && ((entry->vaddr+SUN4C_REAL_PGDIR_SIZE) < start);
-		     entry = entry->next)
-			;
-
-		if ((entry != head) && (entry->vaddr < end)) {
-			int octx = sun4c_get_context();
-
-			sun4c_set_context(new_ctx);
-			do {
-				struct sun4c_mmu_entry *next = entry->next;
-
-				sun4c_flush_segment(entry->vaddr);
-				sun4c_user_unmap(entry);
-				free_user_entry(new_ctx, entry);
-
-				entry = next;
-			} while ((entry != head) && (entry->vaddr < end));
-			sun4c_set_context(octx);
-		}
-		local_irq_restore(flags);
-	}
-}
-
-static void sun4c_flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
-{
-	struct mm_struct *mm = vma->vm_mm;
-	int new_ctx = mm->context;
-
-	if (new_ctx != NO_CONTEXT) {
-		int savectx = sun4c_get_context();
-		unsigned long flags;
-
-		local_irq_save(flags);
-		sun4c_set_context(new_ctx);
-		page &= PAGE_MASK;
-		sun4c_flush_page(page);
-		sun4c_put_pte(page, 0);
-		sun4c_set_context(savectx);
-		local_irq_restore(flags);
-	}
-}
-
-static inline void sun4c_mapioaddr(unsigned long physaddr, unsigned long virt_addr)
-{
-	unsigned long page_entry, pg_iobits;
-
-	pg_iobits = _SUN4C_PAGE_PRESENT | _SUN4C_READABLE | _SUN4C_WRITEABLE |
-		    _SUN4C_PAGE_IO | _SUN4C_PAGE_NOCACHE;
-
-	page_entry = ((physaddr >> PAGE_SHIFT) & SUN4C_PFN_MASK);
-	page_entry |= ((pg_iobits | _SUN4C_PAGE_PRIV) & ~(_SUN4C_PAGE_PRESENT));
-	sun4c_put_pte(virt_addr, page_entry);
-}
-
-static void sun4c_mapiorange(unsigned int bus, unsigned long xpa,
-    unsigned long xva, unsigned int len)
-{
-	while (len != 0) {
-		len -= PAGE_SIZE;
-		sun4c_mapioaddr(xpa, xva);
-		xva += PAGE_SIZE;
-		xpa += PAGE_SIZE;
-	}
-}
-
-static void sun4c_unmapiorange(unsigned long virt_addr, unsigned int len)
-{
-	while (len != 0) {
-		len -= PAGE_SIZE;
-		sun4c_put_pte(virt_addr, 0);
-		virt_addr += PAGE_SIZE;
-	}
-}
-
-static void sun4c_alloc_context(struct mm_struct *old_mm, struct mm_struct *mm)
-{
-	struct ctx_list *ctxp;
-
-	ctxp = ctx_free.next;
-	if (ctxp != &ctx_free) {
-		remove_from_ctx_list(ctxp);
-		add_to_used_ctxlist(ctxp);
-		mm->context = ctxp->ctx_number;
-		ctxp->ctx_mm = mm;
-		return;
-	}
-	ctxp = ctx_used.next;
-	if (ctxp->ctx_mm == old_mm)
-		ctxp = ctxp->next;
-	remove_from_ctx_list(ctxp);
-	add_to_used_ctxlist(ctxp);
-	ctxp->ctx_mm->context = NO_CONTEXT;
-	ctxp->ctx_mm = mm;
-	mm->context = ctxp->ctx_number;
-	sun4c_demap_context(&sun4c_context_ring[ctxp->ctx_number],
-			       ctxp->ctx_number);
-}
-
-/* Switch the current MM context. */
-static void sun4c_switch_mm(struct mm_struct *old_mm, struct mm_struct *mm, struct task_struct *tsk, int cpu)
-{
-	struct ctx_list *ctx;
-	int dirty = 0;
-
-	if (mm->context == NO_CONTEXT) {
-		dirty = 1;
-		sun4c_alloc_context(old_mm, mm);
-	} else {
-		/* Update the LRU ring of contexts. */
-		ctx = ctx_list_pool + mm->context;
-		remove_from_ctx_list(ctx);
-		add_to_used_ctxlist(ctx);
-	}
-	if (dirty || old_mm != mm)
-		sun4c_set_context(mm->context);
-}
-
-static void sun4c_destroy_context(struct mm_struct *mm)
-{
-	struct ctx_list *ctx_old;
-
-	if (mm->context != NO_CONTEXT) {
-		sun4c_demap_context(&sun4c_context_ring[mm->context], mm->context);
-		ctx_old = ctx_list_pool + mm->context;
-		remove_from_ctx_list(ctx_old);
-		add_to_free_ctxlist(ctx_old);
-		mm->context = NO_CONTEXT;
-	}
-}
-
-static void sun4c_mmu_info(struct seq_file *m)
-{
-	int used_user_entries, i;
-
-	used_user_entries = 0;
-	for (i = 0; i < num_contexts; i++)
-		used_user_entries += sun4c_context_ring[i].num_entries;
-
-	seq_printf(m, 
-		   "vacsize\t\t: %d bytes\n"
-		   "vachwflush\t: %s\n"
-		   "vaclinesize\t: %d bytes\n"
-		   "mmuctxs\t\t: %d\n"
-		   "mmupsegs\t: %d\n"
-		   "kernelpsegs\t: %d\n"
-		   "kfreepsegs\t: %d\n"
-		   "usedpsegs\t: %d\n"
-		   "ufreepsegs\t: %d\n"
-		   "user_taken\t: %d\n"
-		   "max_taken\t: %d\n",
-		   sun4c_vacinfo.num_bytes,
-		   (sun4c_vacinfo.do_hwflushes ? "yes" : "no"),
-		   sun4c_vacinfo.linesize,
-		   num_contexts,
-		   (invalid_segment + 1),
-		   sun4c_kernel_ring.num_entries,
-		   sun4c_kfree_ring.num_entries,
-		   used_user_entries,
-		   sun4c_ufree_ring.num_entries,
-		   sun4c_user_taken_entries,
-		   max_user_taken_entries);
-}
-
-/* Nothing below here should touch the mmu hardware nor the mmu_entry
- * data structures.
- */
-
-/* First the functions which the mid-level code uses to directly
- * manipulate the software page tables.  Some defines since we are
- * emulating the i386 page directory layout.
- */
-#define PGD_PRESENT  0x001
-#define PGD_RW       0x002
-#define PGD_USER     0x004
-#define PGD_ACCESSED 0x020
-#define PGD_DIRTY    0x040
-#define PGD_TABLE    (PGD_PRESENT | PGD_RW | PGD_USER | PGD_ACCESSED | PGD_DIRTY)
-
-static void sun4c_set_pte(pte_t *ptep, pte_t pte)
-{
-	*ptep = pte;
-}
-
-static void sun4c_pgd_set(pgd_t * pgdp, pmd_t * pmdp)
-{
-}
-
-static void sun4c_pmd_set(pmd_t * pmdp, pte_t * ptep)
-{
-	pmdp->pmdv[0] = PGD_TABLE | (unsigned long) ptep;
-}
-
-static void sun4c_pmd_populate(pmd_t * pmdp, struct page * ptep)
-{
-	if (page_address(ptep) == NULL) BUG();	/* No highmem on sun4c */
-	pmdp->pmdv[0] = PGD_TABLE | (unsigned long) page_address(ptep);
-}
-
-static int sun4c_pte_present(pte_t pte)
-{
-	return ((pte_val(pte) & (_SUN4C_PAGE_PRESENT | _SUN4C_PAGE_PRIV)) != 0);
-}
-static void sun4c_pte_clear(pte_t *ptep)	{ *ptep = __pte(0); }
-
-static int sun4c_pmd_bad(pmd_t pmd)
-{
-	return (((pmd_val(pmd) & ~PAGE_MASK) != PGD_TABLE) ||
-		(!virt_addr_valid(pmd_val(pmd))));
-}
-
-static int sun4c_pmd_present(pmd_t pmd)
-{
-	return ((pmd_val(pmd) & PGD_PRESENT) != 0);
-}
-
-#if 0 /* if PMD takes one word */
-static void sun4c_pmd_clear(pmd_t *pmdp)	{ *pmdp = __pmd(0); }
-#else /* if pmd_t is a longish aggregate */
-static void sun4c_pmd_clear(pmd_t *pmdp) {
-	memset((void *)pmdp, 0, sizeof(pmd_t));
-}
-#endif
-
-static int sun4c_pgd_none(pgd_t pgd)		{ return 0; }
-static int sun4c_pgd_bad(pgd_t pgd)		{ return 0; }
-static int sun4c_pgd_present(pgd_t pgd)	        { return 1; }
-static void sun4c_pgd_clear(pgd_t * pgdp)	{ }
-
-/*
- * The following only work if pte_present() is true.
- * Undefined behaviour if not..
- */
-static pte_t sun4c_pte_mkwrite(pte_t pte)
-{
-	pte = __pte(pte_val(pte) | _SUN4C_PAGE_WRITE);
-	if (pte_val(pte) & _SUN4C_PAGE_MODIFIED)
-		pte = __pte(pte_val(pte) | _SUN4C_PAGE_SILENT_WRITE);
-	return pte;
-}
-
-static pte_t sun4c_pte_mkdirty(pte_t pte)
-{
-	pte = __pte(pte_val(pte) | _SUN4C_PAGE_MODIFIED);
-	if (pte_val(pte) & _SUN4C_PAGE_WRITE)
-		pte = __pte(pte_val(pte) | _SUN4C_PAGE_SILENT_WRITE);
-	return pte;
-}
-
-static pte_t sun4c_pte_mkyoung(pte_t pte)
-{
-	pte = __pte(pte_val(pte) | _SUN4C_PAGE_ACCESSED);
-	if (pte_val(pte) & _SUN4C_PAGE_READ)
-		pte = __pte(pte_val(pte) | _SUN4C_PAGE_SILENT_READ);
-	return pte;
-}
-
-/*
- * Conversion functions: convert a page and protection to a page entry,
- * and a page entry and page directory to the page they refer to.
- */
-static pte_t sun4c_mk_pte(struct page *page, pgprot_t pgprot)
-{
-	return __pte(page_to_pfn(page) | pgprot_val(pgprot));
-}
-
-static pte_t sun4c_mk_pte_phys(unsigned long phys_page, pgprot_t pgprot)
-{
-	return __pte((phys_page >> PAGE_SHIFT) | pgprot_val(pgprot));
-}
-
-static pte_t sun4c_mk_pte_io(unsigned long page, pgprot_t pgprot, int space)
-{
-	return __pte(((page - PAGE_OFFSET) >> PAGE_SHIFT) | pgprot_val(pgprot));
-}
-
-static unsigned long sun4c_pte_pfn(pte_t pte)
-{
-	return pte_val(pte) & SUN4C_PFN_MASK;
-}
-
-static pte_t sun4c_pgoff_to_pte(unsigned long pgoff)
-{
-	return __pte(pgoff | _SUN4C_PAGE_FILE);
-}
-
-static unsigned long sun4c_pte_to_pgoff(pte_t pte)
-{
-	return pte_val(pte) & ((1UL << PTE_FILE_MAX_BITS) - 1);
-}
-
-
-static inline unsigned long sun4c_pmd_page_v(pmd_t pmd)
-{
-	return (pmd_val(pmd) & PAGE_MASK);
-}
-
-static struct page *sun4c_pmd_page(pmd_t pmd)
-{
-	return virt_to_page(sun4c_pmd_page_v(pmd));
-}
-
-static unsigned long sun4c_pgd_page(pgd_t pgd) { return 0; }
-
-/* to find an entry in a page-table-directory */
-static inline pgd_t *sun4c_pgd_offset(struct mm_struct * mm, unsigned long address)
-{
-	return mm->pgd + (address >> SUN4C_PGDIR_SHIFT);
-}
-
-/* Find an entry in the second-level page table.. */
-static pmd_t *sun4c_pmd_offset(pgd_t * dir, unsigned long address)
-{
-	return (pmd_t *) dir;
-}
-
-/* Find an entry in the third-level page table.. */ 
-pte_t *sun4c_pte_offset_kernel(pmd_t * dir, unsigned long address)
-{
-	return (pte_t *) sun4c_pmd_page_v(*dir) +
-			((address >> PAGE_SHIFT) & (SUN4C_PTRS_PER_PTE - 1));
-}
-
-static unsigned long sun4c_swp_type(swp_entry_t entry)
-{
-	return (entry.val & SUN4C_SWP_TYPE_MASK);
-}
-
-static unsigned long sun4c_swp_offset(swp_entry_t entry)
-{
-	return (entry.val >> SUN4C_SWP_OFF_SHIFT) & SUN4C_SWP_OFF_MASK;
-}
-
-static swp_entry_t sun4c_swp_entry(unsigned long type, unsigned long offset)
-{
-	return (swp_entry_t) {
-		  (offset & SUN4C_SWP_OFF_MASK) << SUN4C_SWP_OFF_SHIFT
-		| (type & SUN4C_SWP_TYPE_MASK) };
-}
-
-static void sun4c_free_pte_slow(pte_t *pte)
-{
-	free_page((unsigned long)pte);
-}
-
-static void sun4c_free_pgd_slow(pgd_t *pgd)
-{
-	free_page((unsigned long)pgd);
-}
-
-static pgd_t *sun4c_get_pgd_fast(void)
-{
-	unsigned long *ret;
-
-	if ((ret = pgd_quicklist) != NULL) {
-		pgd_quicklist = (unsigned long *)(*ret);
-		ret[0] = ret[1];
-		pgtable_cache_size--;
-	} else {
-		pgd_t *init;
-		
-		ret = (unsigned long *)__get_free_page(GFP_KERNEL);
-		memset (ret, 0, (KERNBASE / SUN4C_PGDIR_SIZE) * sizeof(pgd_t));
-		init = sun4c_pgd_offset(&init_mm, 0);
-		memcpy (((pgd_t *)ret) + USER_PTRS_PER_PGD, init + USER_PTRS_PER_PGD,
-			(PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));
-	}
-	return (pgd_t *)ret;
-}
-
-static void sun4c_free_pgd_fast(pgd_t *pgd)
-{
-	*(unsigned long *)pgd = (unsigned long) pgd_quicklist;
-	pgd_quicklist = (unsigned long *) pgd;
-	pgtable_cache_size++;
-}
-
-
-static inline pte_t *
-sun4c_pte_alloc_one_fast(struct mm_struct *mm, unsigned long address)
-{
-	unsigned long *ret;
-
-	if ((ret = (unsigned long *)pte_quicklist) != NULL) {
-		pte_quicklist = (unsigned long *)(*ret);
-		ret[0] = ret[1];
-		pgtable_cache_size--;
-	}
-	return (pte_t *)ret;
-}
-
-static pte_t *sun4c_pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
-{
-	pte_t *pte;
-
-	if ((pte = sun4c_pte_alloc_one_fast(mm, address)) != NULL)
-		return pte;
-
-	pte = (pte_t *)get_zeroed_page(GFP_KERNEL|__GFP_REPEAT);
-	return pte;
-}
-
-static pgtable_t sun4c_pte_alloc_one(struct mm_struct *mm, unsigned long address)
-{
-	pte_t *pte;
-	struct page *page;
-
-	pte = sun4c_pte_alloc_one_kernel(mm, address);
-	if (pte == NULL)
-		return NULL;
-	page = virt_to_page(pte);
-	pgtable_page_ctor(page);
-	return page;
-}
-
-static inline void sun4c_free_pte_fast(pte_t *pte)
-{
-	*(unsigned long *)pte = (unsigned long) pte_quicklist;
-	pte_quicklist = (unsigned long *) pte;
-	pgtable_cache_size++;
-}
-
-static void sun4c_pte_free(pgtable_t pte)
-{
-	pgtable_page_dtor(pte);
-	sun4c_free_pte_fast(page_address(pte));
-}
-
-/*
- * allocating and freeing a pmd is trivial: the 1-entry pmd is
- * inside the pgd, so has no extra memory associated with it.
- */
-static pmd_t *sun4c_pmd_alloc_one(struct mm_struct *mm, unsigned long address)
-{
-	BUG();
-	return NULL;
-}
-
-static void sun4c_free_pmd_fast(pmd_t * pmd) { }
-
-static void sun4c_check_pgt_cache(int low, int high)
-{
-	if (pgtable_cache_size > high) {
-		do {
-			if (pgd_quicklist)
-				sun4c_free_pgd_slow(sun4c_get_pgd_fast());
-			if (pte_quicklist)
-				sun4c_free_pte_slow(sun4c_pte_alloc_one_fast(NULL, 0));
-		} while (pgtable_cache_size > low);
-	}
-}
-
-/* An experiment, turn off by default for now... -DaveM */
-#define SUN4C_PRELOAD_PSEG
-
-void sun4c_update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t *ptep)
-{
-	unsigned long flags;
-	int pseg;
-
-	if (vma->vm_mm->context == NO_CONTEXT)
-		return;
-
-	local_irq_save(flags);
-	address &= PAGE_MASK;
-	if ((pseg = sun4c_get_segmap(address)) == invalid_segment) {
-		struct sun4c_mmu_entry *entry = sun4c_user_strategy();
-		struct mm_struct *mm = vma->vm_mm;
-		unsigned long start, end;
-
-		entry->vaddr = start = (address & SUN4C_REAL_PGDIR_MASK);
-		entry->ctx = mm->context;
-		add_ring_ordered(sun4c_context_ring + mm->context, entry);
-		sun4c_put_segmap(entry->vaddr, entry->pseg);
-		end = start + SUN4C_REAL_PGDIR_SIZE;
-		while (start < end) {
-#ifdef SUN4C_PRELOAD_PSEG
-			pgd_t *pgdp = sun4c_pgd_offset(mm, start);
-			pte_t *ptep;
-
-			if (!pgdp)
-				goto no_mapping;
-			ptep = sun4c_pte_offset_kernel((pmd_t *) pgdp, start);
-			if (!ptep || !(pte_val(*ptep) & _SUN4C_PAGE_PRESENT))
-				goto no_mapping;
-			sun4c_put_pte(start, pte_val(*ptep));
-			goto next;
-
-		no_mapping:
-#endif
-			sun4c_put_pte(start, 0);
-#ifdef SUN4C_PRELOAD_PSEG
-		next:
-#endif
-			start += PAGE_SIZE;
-		}
-#ifndef SUN4C_PRELOAD_PSEG
-		sun4c_put_pte(address, pte_val(*ptep));
-#endif
-		local_irq_restore(flags);
-		return;
-	} else {
-		struct sun4c_mmu_entry *entry = &mmu_entry_pool[pseg];
-
-		remove_lru(entry);
-		add_lru(entry);
-	}
-
-	sun4c_put_pte(address, pte_val(*ptep));
-	local_irq_restore(flags);
-}
-
-extern void sparc_context_init(int);
-extern unsigned long bootmem_init(unsigned long *pages_avail);
-extern unsigned long last_valid_pfn;
-
-void __init sun4c_paging_init(void)
-{
-	int i, cnt;
-	unsigned long kernel_end, vaddr;
-	extern struct resource sparc_iomap;
-	unsigned long end_pfn, pages_avail;
-
-	kernel_end = (unsigned long) &_end;
-	kernel_end = SUN4C_REAL_PGDIR_ALIGN(kernel_end);
-
-	pages_avail = 0;
-	last_valid_pfn = bootmem_init(&pages_avail);
-	end_pfn = last_valid_pfn;
-
-	sun4c_probe_mmu();
-	invalid_segment = (num_segmaps - 1);
-	sun4c_init_mmu_entry_pool();
-	sun4c_init_rings();
-	sun4c_init_map_kernelprom(kernel_end);
-	sun4c_init_clean_mmu(kernel_end);
-	sun4c_init_fill_kernel_ring(SUN4C_KERNEL_BUCKETS);
-	sun4c_init_lock_area(sparc_iomap.start, IOBASE_END);
-	sun4c_init_lock_area(DVMA_VADDR, DVMA_END);
-	sun4c_init_lock_areas();
-	sun4c_init_fill_user_ring();
-
-	sun4c_set_context(0);
-	memset(swapper_pg_dir, 0, PAGE_SIZE);
-	memset(pg0, 0, PAGE_SIZE);
-	memset(pg1, 0, PAGE_SIZE);
-	memset(pg2, 0, PAGE_SIZE);
-	memset(pg3, 0, PAGE_SIZE);
-
-	/* Save work later. */
-	vaddr = VMALLOC_START;
-	swapper_pg_dir[vaddr>>SUN4C_PGDIR_SHIFT] = __pgd(PGD_TABLE | (unsigned long) pg0);
-	vaddr += SUN4C_PGDIR_SIZE;
-	swapper_pg_dir[vaddr>>SUN4C_PGDIR_SHIFT] = __pgd(PGD_TABLE | (unsigned long) pg1);
-	vaddr += SUN4C_PGDIR_SIZE;
-	swapper_pg_dir[vaddr>>SUN4C_PGDIR_SHIFT] = __pgd(PGD_TABLE | (unsigned long) pg2);
-	vaddr += SUN4C_PGDIR_SIZE;
-	swapper_pg_dir[vaddr>>SUN4C_PGDIR_SHIFT] = __pgd(PGD_TABLE | (unsigned long) pg3);
-	sun4c_init_ss2_cache_bug();
-	sparc_context_init(num_contexts);
-
-	{
-		unsigned long zones_size[MAX_NR_ZONES];
-		unsigned long zholes_size[MAX_NR_ZONES];
-		unsigned long npages;
-		int znum;
-
-		for (znum = 0; znum < MAX_NR_ZONES; znum++)
-			zones_size[znum] = zholes_size[znum] = 0;
-
-		npages = max_low_pfn - pfn_base;
-
-		zones_size[ZONE_DMA] = npages;
-		zholes_size[ZONE_DMA] = npages - pages_avail;
-
-		npages = highend_pfn - max_low_pfn;
-		zones_size[ZONE_HIGHMEM] = npages;
-		zholes_size[ZONE_HIGHMEM] = npages - calc_highpages();
-
-		free_area_init_node(0, zones_size, pfn_base, zholes_size);
-	}
-
-	cnt = 0;
-	for (i = 0; i < num_segmaps; i++)
-		if (mmu_entry_pool[i].locked)
-			cnt++;
-
-	max_user_taken_entries = num_segmaps - cnt - 40 - 1;
-
-	printk("SUN4C: %d mmu entries for the kernel\n", cnt);
-}
-
-static pgprot_t sun4c_pgprot_noncached(pgprot_t prot)
-{
-	prot |= __pgprot(_SUN4C_PAGE_IO | _SUN4C_PAGE_NOCACHE);
-
-	return prot;
-}
-
-/* Load up routines and constants for sun4c mmu */
-void __init ld_mmu_sun4c(void)
-{
-	extern void ___xchg32_sun4c(void);
-	
-	printk("Loading sun4c MMU routines\n");
-
-	/* First the constants */
-	BTFIXUPSET_SIMM13(pgdir_shift, SUN4C_PGDIR_SHIFT);
-	BTFIXUPSET_SETHI(pgdir_size, SUN4C_PGDIR_SIZE);
-	BTFIXUPSET_SETHI(pgdir_mask, SUN4C_PGDIR_MASK);
-
-	BTFIXUPSET_SIMM13(ptrs_per_pmd, SUN4C_PTRS_PER_PMD);
-	BTFIXUPSET_SIMM13(ptrs_per_pgd, SUN4C_PTRS_PER_PGD);
-	BTFIXUPSET_SIMM13(user_ptrs_per_pgd, KERNBASE / SUN4C_PGDIR_SIZE);
-
-	BTFIXUPSET_INT(page_none, pgprot_val(SUN4C_PAGE_NONE));
-	PAGE_SHARED = pgprot_val(SUN4C_PAGE_SHARED);
-	BTFIXUPSET_INT(page_copy, pgprot_val(SUN4C_PAGE_COPY));
-	BTFIXUPSET_INT(page_readonly, pgprot_val(SUN4C_PAGE_READONLY));
-	BTFIXUPSET_INT(page_kernel, pgprot_val(SUN4C_PAGE_KERNEL));
-	page_kernel = pgprot_val(SUN4C_PAGE_KERNEL);
-
-	/* Functions */
-	BTFIXUPSET_CALL(pgprot_noncached, sun4c_pgprot_noncached, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(___xchg32, ___xchg32_sun4c, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(do_check_pgt_cache, sun4c_check_pgt_cache, BTFIXUPCALL_NORM);
-	
-	BTFIXUPSET_CALL(flush_cache_all, sun4c_flush_cache_all, BTFIXUPCALL_NORM);
-
-	if (sun4c_vacinfo.do_hwflushes) {
-		BTFIXUPSET_CALL(sun4c_flush_page, sun4c_flush_page_hw, BTFIXUPCALL_NORM);
-		BTFIXUPSET_CALL(sun4c_flush_segment, sun4c_flush_segment_hw, BTFIXUPCALL_NORM);
-		BTFIXUPSET_CALL(sun4c_flush_context, sun4c_flush_context_hw, BTFIXUPCALL_NORM);
-	} else {
-		BTFIXUPSET_CALL(sun4c_flush_page, sun4c_flush_page_sw, BTFIXUPCALL_NORM);
-		BTFIXUPSET_CALL(sun4c_flush_segment, sun4c_flush_segment_sw, BTFIXUPCALL_NORM);
-		BTFIXUPSET_CALL(sun4c_flush_context, sun4c_flush_context_sw, BTFIXUPCALL_NORM);
-	}
-
-	BTFIXUPSET_CALL(flush_tlb_mm, sun4c_flush_tlb_mm, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_cache_mm, sun4c_flush_cache_mm, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(destroy_context, sun4c_destroy_context, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(switch_mm, sun4c_switch_mm, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_cache_page, sun4c_flush_cache_page, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_tlb_page, sun4c_flush_tlb_page, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_tlb_range, sun4c_flush_tlb_range, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_cache_range, sun4c_flush_cache_range, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(__flush_page_to_ram, sun4c_flush_page_to_ram, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(flush_tlb_all, sun4c_flush_tlb_all, BTFIXUPCALL_NORM);
-
-	BTFIXUPSET_CALL(flush_sig_insns, sun4c_flush_sig_insns, BTFIXUPCALL_NOP);
-
-	BTFIXUPSET_CALL(set_pte, sun4c_set_pte, BTFIXUPCALL_STO1O0);
-
-	BTFIXUPSET_CALL(pte_pfn, sun4c_pte_pfn, BTFIXUPCALL_NORM);
-#if 0 /* PAGE_SHIFT <= 12 */ /* Eek. Investigate. XXX */
-	BTFIXUPSET_CALL(pmd_page, sun4c_pmd_page, BTFIXUPCALL_ANDNINT(PAGE_SIZE - 1));
-#else
-	BTFIXUPSET_CALL(pmd_page, sun4c_pmd_page, BTFIXUPCALL_NORM);
-#endif
-	BTFIXUPSET_CALL(pmd_set, sun4c_pmd_set, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(pmd_populate, sun4c_pmd_populate, BTFIXUPCALL_NORM);
-
-	BTFIXUPSET_CALL(pte_present, sun4c_pte_present, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(pte_clear, sun4c_pte_clear, BTFIXUPCALL_STG0O0);
-
-	BTFIXUPSET_CALL(pmd_bad, sun4c_pmd_bad, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(pmd_present, sun4c_pmd_present, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(pmd_clear, sun4c_pmd_clear, BTFIXUPCALL_STG0O0);
-
-	BTFIXUPSET_CALL(pgd_none, sun4c_pgd_none, BTFIXUPCALL_RETINT(0));
-	BTFIXUPSET_CALL(pgd_bad, sun4c_pgd_bad, BTFIXUPCALL_RETINT(0));
-	BTFIXUPSET_CALL(pgd_present, sun4c_pgd_present, BTFIXUPCALL_RETINT(1));
-	BTFIXUPSET_CALL(pgd_clear, sun4c_pgd_clear, BTFIXUPCALL_NOP);
-
-	BTFIXUPSET_CALL(mk_pte, sun4c_mk_pte, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(mk_pte_phys, sun4c_mk_pte_phys, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(mk_pte_io, sun4c_mk_pte_io, BTFIXUPCALL_NORM);
-
-	BTFIXUPSET_INT(pte_modify_mask, _SUN4C_PAGE_CHG_MASK);
-	BTFIXUPSET_CALL(pmd_offset, sun4c_pmd_offset, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(pte_offset_kernel, sun4c_pte_offset_kernel, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(free_pte_fast, sun4c_free_pte_fast, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(pte_free, sun4c_pte_free, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(pte_alloc_one_kernel, sun4c_pte_alloc_one_kernel, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(pte_alloc_one, sun4c_pte_alloc_one, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(free_pmd_fast, sun4c_free_pmd_fast, BTFIXUPCALL_NOP);
-	BTFIXUPSET_CALL(pmd_alloc_one, sun4c_pmd_alloc_one, BTFIXUPCALL_RETO0);
-	BTFIXUPSET_CALL(free_pgd_fast, sun4c_free_pgd_fast, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(get_pgd_fast, sun4c_get_pgd_fast, BTFIXUPCALL_NORM);
-
-	BTFIXUPSET_HALF(pte_writei, _SUN4C_PAGE_WRITE);
-	BTFIXUPSET_HALF(pte_dirtyi, _SUN4C_PAGE_MODIFIED);
-	BTFIXUPSET_HALF(pte_youngi, _SUN4C_PAGE_ACCESSED);
-	BTFIXUPSET_HALF(pte_filei, _SUN4C_PAGE_FILE);
-	BTFIXUPSET_HALF(pte_wrprotecti, _SUN4C_PAGE_WRITE|_SUN4C_PAGE_SILENT_WRITE);
-	BTFIXUPSET_HALF(pte_mkcleani, _SUN4C_PAGE_MODIFIED|_SUN4C_PAGE_SILENT_WRITE);
-	BTFIXUPSET_HALF(pte_mkoldi, _SUN4C_PAGE_ACCESSED|_SUN4C_PAGE_SILENT_READ);
-	BTFIXUPSET_CALL(pte_mkwrite, sun4c_pte_mkwrite, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(pte_mkdirty, sun4c_pte_mkdirty, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(pte_mkyoung, sun4c_pte_mkyoung, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(update_mmu_cache, sun4c_update_mmu_cache, BTFIXUPCALL_NORM);
-
-	BTFIXUPSET_CALL(pte_to_pgoff, sun4c_pte_to_pgoff, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(pgoff_to_pte, sun4c_pgoff_to_pte, BTFIXUPCALL_NORM);
-
-	BTFIXUPSET_CALL(mmu_lockarea, sun4c_lockarea, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(mmu_unlockarea, sun4c_unlockarea, BTFIXUPCALL_NORM);
-
-	BTFIXUPSET_CALL(mmu_get_scsi_one, sun4c_get_scsi_one, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(mmu_get_scsi_sgl, sun4c_get_scsi_sgl, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(mmu_release_scsi_one, sun4c_release_scsi_one, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(mmu_release_scsi_sgl, sun4c_release_scsi_sgl, BTFIXUPCALL_NORM);
-
-	BTFIXUPSET_CALL(mmu_map_dma_area, sun4c_map_dma_area, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(mmu_unmap_dma_area, sun4c_unmap_dma_area, BTFIXUPCALL_NORM);
-
-	BTFIXUPSET_CALL(sparc_mapiorange, sun4c_mapiorange, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(sparc_unmapiorange, sun4c_unmapiorange, BTFIXUPCALL_NORM);
-
-	BTFIXUPSET_CALL(__swp_type, sun4c_swp_type, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(__swp_offset, sun4c_swp_offset, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(__swp_entry, sun4c_swp_entry, BTFIXUPCALL_NORM);
-
-	BTFIXUPSET_CALL(alloc_thread_info_node, sun4c_alloc_thread_info_node, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(free_thread_info, sun4c_free_thread_info, BTFIXUPCALL_NORM);
-
-	BTFIXUPSET_CALL(mmu_info, sun4c_mmu_info, BTFIXUPCALL_NORM);
-
-	/* These should _never_ get called with two level tables. */
-	BTFIXUPSET_CALL(pgd_set, sun4c_pgd_set, BTFIXUPCALL_NOP);
-	BTFIXUPSET_CALL(pgd_page_vaddr, sun4c_pgd_page, BTFIXUPCALL_RETO0);
-}
diff --git a/arch/sparc/mm/viking.S b/arch/sparc/mm/viking.S
index 6dfcc13d3100..bf8ee0613ae7 100644
--- a/arch/sparc/mm/viking.S
+++ b/arch/sparc/mm/viking.S
@@ -14,7 +14,6 @@
 #include <asm/page.h>
 #include <asm/pgtsrmmu.h>
 #include <asm/viking.h>
-#include <asm/btfixup.h>
 
 #ifdef CONFIG_SMP
 	.data